diff --git a/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.cpp b/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.cpp
index b37a0ca72c..157b8add28 100644
--- a/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.cpp
+++ b/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.cpp
@@ -23,7 +23,7 @@ ClipboardHistoryModel::ClipboardHistoryModel()
 {
 }
 
-String ClipboardHistoryModel::column_name(int column) const
+ErrorOr<String> ClipboardHistoryModel::column_name(int column) const
 {
     switch (column) {
     case Column::Data:
diff --git a/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.h b/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.h
index e7e45ea8fb..246d0e2bdc 100644
--- a/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.h
+++ b/Userland/Applets/ClipboardHistory/ClipboardHistoryModel.h
@@ -60,7 +60,7 @@ private:
 
     // ^GUI::Model
     virtual int row_count(const GUI::ModelIndex&) const override { return m_history_items.size(); }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual int column_count(const GUI::ModelIndex&) const override { return Column::__Count; }
 
     // ^GUI::Clipboard::ClipboardClient
diff --git a/Userland/Applications/Browser/CookiesModel.cpp b/Userland/Applications/Browser/CookiesModel.cpp
index 3fbe1f8787..2dfabc6b94 100644
--- a/Userland/Applications/Browser/CookiesModel.cpp
+++ b/Userland/Applications/Browser/CookiesModel.cpp
@@ -34,7 +34,7 @@ int CookiesModel::row_count(GUI::ModelIndex const& index) const
     return 0;
 }
 
-String CookiesModel::column_name(int column) const
+ErrorOr<String> CookiesModel::column_name(int column) const
 {
     switch (column) {
     case Column::Domain:
@@ -46,14 +46,14 @@ String CookiesModel::column_name(int column) const
     case Column::Value:
         return "Value"_short_string;
     case Column::ExpiryTime:
-        return "Expiry time"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Expiry time"_string);
     case Column::SameSite:
-        return "SameSite"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("SameSite"_string);
     case Column::__Count:
-        return {};
+        return String {};
     }
 
-    return {};
+    return String {};
 }
 
 GUI::ModelIndex CookiesModel::index(int row, int column, GUI::ModelIndex const&) const
diff --git a/Userland/Applications/Browser/CookiesModel.h b/Userland/Applications/Browser/CookiesModel.h
index b34b0e9350..3df6ee03c0 100644
--- a/Userland/Applications/Browser/CookiesModel.h
+++ b/Userland/Applications/Browser/CookiesModel.h
@@ -30,7 +30,7 @@ public:
     void clear_items();
     virtual int row_count(GUI::ModelIndex const&) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int column) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::ModelIndex index(int row, int column = 0, GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual GUI::Variant data(GUI::ModelIndex const& index, GUI::ModelRole role = GUI::ModelRole::Display) const override;
     virtual GUI::Model::MatchResult data_matches(GUI::ModelIndex const& index, GUI::Variant const& term) const override;
diff --git a/Userland/Applications/Browser/History/HistoryModel.cpp b/Userland/Applications/Browser/History/HistoryModel.cpp
index 6fbee523e1..ec85b6cab5 100644
--- a/Userland/Applications/Browser/History/HistoryModel.cpp
+++ b/Userland/Applications/Browser/History/HistoryModel.cpp
@@ -34,7 +34,7 @@ int HistoryModel::row_count(GUI::ModelIndex const& index) const
     return 0;
 }
 
-String HistoryModel::column_name(int column) const
+ErrorOr<String> HistoryModel::column_name(int column) const
 {
     switch (column) {
     case Column::Title:
@@ -45,7 +45,7 @@ String HistoryModel::column_name(int column) const
         VERIFY_NOT_REACHED();
     }
 
-    return {};
+    return String {};
 }
 
 GUI::ModelIndex HistoryModel::index(int row, int column, GUI::ModelIndex const&) const
diff --git a/Userland/Applications/Browser/History/HistoryModel.h b/Userland/Applications/Browser/History/HistoryModel.h
index 5b89da9ee3..1fc0ebf5dd 100644
--- a/Userland/Applications/Browser/History/HistoryModel.h
+++ b/Userland/Applications/Browser/History/HistoryModel.h
@@ -25,7 +25,7 @@ public:
     void clear_items();
     virtual int row_count(GUI::ModelIndex const&) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int column) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::ModelIndex index(int row, int column = 0, GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual GUI::Variant data(GUI::ModelIndex const& index, GUI::ModelRole role = GUI::ModelRole::Display) const override;
     virtual GUI::Model::MatchResult data_matches(GUI::ModelIndex const& index, GUI::Variant const& term) const override;
diff --git a/Userland/Applications/Browser/StorageModel.cpp b/Userland/Applications/Browser/StorageModel.cpp
index 879bee6baf..07eaeff654 100644
--- a/Userland/Applications/Browser/StorageModel.cpp
+++ b/Userland/Applications/Browser/StorageModel.cpp
@@ -35,7 +35,7 @@ int StorageModel::row_count(GUI::ModelIndex const& index) const
     return 0;
 }
 
-String StorageModel::column_name(int column) const
+ErrorOr<String> StorageModel::column_name(int column) const
 {
     switch (column) {
     case Column::Key:
@@ -43,10 +43,10 @@ String StorageModel::column_name(int column) const
     case Column::Value:
         return "Value"_short_string;
     case Column::__Count:
-        return {};
+        return String {};
     }
 
-    return {};
+    return String {};
 }
 
 GUI::ModelIndex StorageModel::index(int row, int column, GUI::ModelIndex const&) const
diff --git a/Userland/Applications/Browser/StorageModel.h b/Userland/Applications/Browser/StorageModel.h
index 92ed8bcf62..b081bc887d 100644
--- a/Userland/Applications/Browser/StorageModel.h
+++ b/Userland/Applications/Browser/StorageModel.h
@@ -22,7 +22,7 @@ public:
     void clear_items();
     virtual int row_count(GUI::ModelIndex const&) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int column) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::ModelIndex index(int row, int column = 0, GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual GUI::Variant data(GUI::ModelIndex const& index, GUI::ModelRole role = GUI::ModelRole::Display) const override;
     virtual GUI::Model::MatchResult data_matches(GUI::ModelIndex const& index, GUI::Variant const& term) const override;
diff --git a/Userland/Applications/Calendar/AddEventDialog.cpp b/Userland/Applications/Calendar/AddEventDialog.cpp
index 09ff89df3c..80f9e8e2dc 100644
--- a/Userland/Applications/Calendar/AddEventDialog.cpp
+++ b/Userland/Applications/Calendar/AddEventDialog.cpp
@@ -120,7 +120,7 @@ int AddEventDialog::MeridiemListModel::row_count(const GUI::ModelIndex&) const
     return 2;
 }
 
-String AddEventDialog::MonthListModel::column_name(int column) const
+ErrorOr<String> AddEventDialog::MonthListModel::column_name(int column) const
 {
     switch (column) {
     case Column::Month:
@@ -130,11 +130,11 @@ String AddEventDialog::MonthListModel::column_name(int column) const
     }
 }
 
-String AddEventDialog::MeridiemListModel::column_name(int column) const
+ErrorOr<String> AddEventDialog::MeridiemListModel::column_name(int column) const
 {
     switch (column) {
     case Column::Meridiem:
-        return "Meridiem"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Meridiem"_string);
     default:
         VERIFY_NOT_REACHED();
     }
diff --git a/Userland/Applications/Calendar/AddEventDialog.h b/Userland/Applications/Calendar/AddEventDialog.h
index 4f0aa162e8..5d7ad20de4 100644
--- a/Userland/Applications/Calendar/AddEventDialog.h
+++ b/Userland/Applications/Calendar/AddEventDialog.h
@@ -38,7 +38,7 @@ private:
 
         virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
         virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-        virtual String column_name(int) const override;
+        virtual ErrorOr<String> column_name(int) const override;
         virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
     private:
@@ -57,7 +57,7 @@ private:
 
         virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
         virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-        virtual String column_name(int) const override;
+        virtual ErrorOr<String> column_name(int) const override;
         virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
     private:
diff --git a/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp b/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
index d2fc3c215e..6d0cf87798 100644
--- a/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
+++ b/Userland/Applications/CertificateSettings/CertificateStoreWidget.cpp
@@ -34,15 +34,15 @@ ErrorOr<void> CertificateStoreModel::load()
     return {};
 }
 
-String CertificateStoreModel::column_name(int column) const
+ErrorOr<String> CertificateStoreModel::column_name(int column) const
 {
     switch (column) {
     case Column::IssuedTo:
-        return "Issued To"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Issued To"_string);
     case Column::IssuedBy:
-        return "Issued By"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Issued By"_string);
     case Column::Expire:
-        return "Expiration Date"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Expiration Date"_string);
     default:
         VERIFY_NOT_REACHED();
     }
diff --git a/Userland/Applications/CertificateSettings/CertificateStoreWidget.h b/Userland/Applications/CertificateSettings/CertificateStoreWidget.h
index 107305fe68..cc9d02b3d8 100644
--- a/Userland/Applications/CertificateSettings/CertificateStoreWidget.h
+++ b/Userland/Applications/CertificateSettings/CertificateStoreWidget.h
@@ -44,7 +44,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return m_certificates.size(); }
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual ErrorOr<void> load();
     virtual ErrorOr<size_t> add(Vector<Certificate> const&);
diff --git a/Userland/Applications/HexEditor/SearchResultsModel.h b/Userland/Applications/HexEditor/SearchResultsModel.h
index 927459990b..ce4e39c86f 100644
--- a/Userland/Applications/HexEditor/SearchResultsModel.h
+++ b/Userland/Applications/HexEditor/SearchResultsModel.h
@@ -40,7 +40,7 @@ public:
         return 2;
     }
 
-    String column_name(int column) const override
+    ErrorOr<String> column_name(int column) const override
     {
         switch (column) {
         case Column::Offset:
diff --git a/Userland/Applications/HexEditor/ValueInspectorModel.h b/Userland/Applications/HexEditor/ValueInspectorModel.h
index 79d931ada1..e8caf398d2 100644
--- a/Userland/Applications/HexEditor/ValueInspectorModel.h
+++ b/Userland/Applications/HexEditor/ValueInspectorModel.h
@@ -63,13 +63,13 @@ public:
         return 2;
     }
 
-    String column_name(int column) const override
+    ErrorOr<String> column_name(int column) const override
     {
         switch (column) {
         case Column::Type:
             return "Type"_short_string;
         case Column::Value:
-            return m_is_little_endian ? "Value (Little Endian)"_string.release_value_but_fixme_should_propagate_errors() : "Value (Big Endian)"_string.release_value_but_fixme_should_propagate_errors();
+            return m_is_little_endian ? TRY("Value (Little Endian)"_string) : TRY("Value (Big Endian)"_string);
         }
         VERIFY_NOT_REACHED();
     }
diff --git a/Userland/Applications/Mail/InboxModel.cpp b/Userland/Applications/Mail/InboxModel.cpp
index 5eee5f0e1f..4519014ffd 100644
--- a/Userland/Applications/Mail/InboxModel.cpp
+++ b/Userland/Applications/Mail/InboxModel.cpp
@@ -17,7 +17,7 @@ int InboxModel::row_count(GUI::ModelIndex const&) const
     return m_entries.size();
 }
 
-String InboxModel::column_name(int column_index) const
+ErrorOr<String> InboxModel::column_name(int column_index) const
 {
     switch (column_index) {
     case Column::From:
diff --git a/Userland/Applications/Mail/InboxModel.h b/Userland/Applications/Mail/InboxModel.h
index ab63595130..19272c0dd9 100644
--- a/Userland/Applications/Mail/InboxModel.h
+++ b/Userland/Applications/Mail/InboxModel.h
@@ -32,7 +32,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
 private:
diff --git a/Userland/Applications/MouseSettings/ThemeWidget.cpp b/Userland/Applications/MouseSettings/ThemeWidget.cpp
index d71566cea7..815332eb4c 100644
--- a/Userland/Applications/MouseSettings/ThemeWidget.cpp
+++ b/Userland/Applications/MouseSettings/ThemeWidget.cpp
@@ -15,11 +15,11 @@
 #include <LibGUI/SortingProxyModel.h>
 #include <LibGUI/TableView.h>
 
-String MouseCursorModel::column_name(int column_index) const
+ErrorOr<String> MouseCursorModel::column_name(int column_index) const
 {
     switch (column_index) {
     case Column::Bitmap:
-        return {};
+        return String {};
     case Column::Name:
         return "Name"_short_string;
     }
diff --git a/Userland/Applications/MouseSettings/ThemeWidget.h b/Userland/Applications/MouseSettings/ThemeWidget.h
index 07fda847be..2308745c7b 100644
--- a/Userland/Applications/MouseSettings/ThemeWidget.h
+++ b/Userland/Applications/MouseSettings/ThemeWidget.h
@@ -25,7 +25,7 @@ public:
     virtual int row_count(const GUI::ModelIndex&) const override { return m_cursors.size(); }
     virtual int column_count(const GUI::ModelIndex&) const override { return Column::__Count; }
 
-    virtual String column_name(int column_index) const override;
+    virtual ErrorOr<String> column_name(int column_index) const override;
     virtual GUI::Variant data(const GUI::ModelIndex& index, GUI::ModelRole role) const override;
     virtual void invalidate() override;
 
diff --git a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
index d419d52033..4bf3777b89 100644
--- a/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
+++ b/Userland/Applications/PDFViewer/PDFViewerWidget.cpp
@@ -64,7 +64,7 @@ public:
         return Columns::Page;
     }
 
-    String column_name(int index) const override
+    ErrorOr<String> column_name(int index) const override
     {
         switch (index) {
         case 0:
diff --git a/Userland/Applications/PartitionEditor/PartitionModel.cpp b/Userland/Applications/PartitionEditor/PartitionModel.cpp
index 4a059cc690..b69e24efee 100644
--- a/Userland/Applications/PartitionEditor/PartitionModel.cpp
+++ b/Userland/Applications/PartitionEditor/PartitionModel.cpp
@@ -17,17 +17,17 @@ NonnullRefPtr<PartitionModel> PartitionModel::create()
     return adopt_ref(*new PartitionModel);
 }
 
-String PartitionModel::column_name(int column) const
+ErrorOr<String> PartitionModel::column_name(int column) const
 {
     switch (column) {
     case Column::Partition:
-        return "Partition"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Partition"_string);
     case Column::StartBlock:
-        return "Start Block"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Start Block"_string);
     case Column::EndBlock:
-        return "End Block"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("End Block"_string);
     case Column::TotalBlocks:
-        return "Total Blocks"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Total Blocks"_string);
     case Column::Size:
         return "Size"_short_string;
     default:
diff --git a/Userland/Applications/PartitionEditor/PartitionModel.h b/Userland/Applications/PartitionEditor/PartitionModel.h
index a66fff5f11..bc3a1febe4 100644
--- a/Userland/Applications/PartitionEditor/PartitionModel.h
+++ b/Userland/Applications/PartitionEditor/PartitionModel.h
@@ -28,7 +28,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return m_partition_table->partitions_count(); }
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
 
     ErrorOr<void> set_device_path(DeprecatedString const&);
diff --git a/Userland/Applications/SoundPlayer/PlaylistWidget.cpp b/Userland/Applications/SoundPlayer/PlaylistWidget.cpp
index 61bd75e6e1..feaeda5672 100644
--- a/Userland/Applications/SoundPlayer/PlaylistWidget.cpp
+++ b/Userland/Applications/SoundPlayer/PlaylistWidget.cpp
@@ -73,13 +73,13 @@ DeprecatedString PlaylistModel::format_duration(u32 duration_in_seconds)
     return DeprecatedString::formatted("{:02}:{:02}:{:02}", duration_in_seconds / 3600, duration_in_seconds / 60, duration_in_seconds % 60);
 }
 
-String PlaylistModel::column_name(int column) const
+ErrorOr<String> PlaylistModel::column_name(int column) const
 {
     switch (column) {
     case 0:
         return "Title"_short_string;
     case 1:
-        return "Duration"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Duration"_string);
     case 2:
         return "Group"_short_string;
     case 3:
@@ -87,7 +87,7 @@ String PlaylistModel::column_name(int column) const
     case 4:
         return "Artist"_short_string;
     case 5:
-        return "Filesize"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Filesize"_string);
     }
     VERIFY_NOT_REACHED();
 }
diff --git a/Userland/Applications/SoundPlayer/PlaylistWidget.h b/Userland/Applications/SoundPlayer/PlaylistWidget.h
index fcf67bbcd8..89c4ea0f0a 100644
--- a/Userland/Applications/SoundPlayer/PlaylistWidget.h
+++ b/Userland/Applications/SoundPlayer/PlaylistWidget.h
@@ -24,7 +24,7 @@ public:
     int row_count(const GUI::ModelIndex&) const override { return m_playlist_items.size(); }
     int column_count(const GUI::ModelIndex&) const override { return 6; }
     GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
-    String column_name(int column) const override;
+    ErrorOr<String> column_name(int column) const override;
     Vector<M3UEntry>& items() { return m_playlist_items; }
 
 private:
diff --git a/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp b/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
index cad08a711e..aaf34daa0d 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
@@ -162,12 +162,12 @@ RefPtr<Core::MimeData> SheetModel::mime_data(const GUI::ModelSelection& selectio
     return mime_data;
 }
 
-String SheetModel::column_name(int index) const
+ErrorOr<String> SheetModel::column_name(int index) const
 {
     if (index < 0)
-        return {};
+        return String {};
 
-    return String::from_deprecated_string(m_sheet->column(index)).release_value_but_fixme_should_propagate_errors();
+    return TRY(String::from_deprecated_string(m_sheet->column(index)));
 }
 
 bool SheetModel::is_editable(const GUI::ModelIndex& index) const
diff --git a/Userland/Applications/Spreadsheet/SpreadsheetModel.h b/Userland/Applications/Spreadsheet/SpreadsheetModel.h
index 15bd933ad7..9a876e23cc 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetModel.h
+++ b/Userland/Applications/Spreadsheet/SpreadsheetModel.h
@@ -23,7 +23,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->row_count(); }
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_sheet->column_count(); }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
     virtual RefPtr<Core::MimeData> mime_data(const GUI::ModelSelection&) const override;
     virtual bool is_editable(const GUI::ModelIndex&) const override;
diff --git a/Userland/Applications/SystemMonitor/ProcessModel.cpp b/Userland/Applications/SystemMonitor/ProcessModel.cpp
index 37de9b02f2..28e247dd0a 100644
--- a/Userland/Applications/SystemMonitor/ProcessModel.cpp
+++ b/Userland/Applications/SystemMonitor/ProcessModel.cpp
@@ -71,11 +71,11 @@ int ProcessModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String ProcessModel::column_name(int column) const
+ErrorOr<String> ProcessModel::column_name(int column) const
 {
     switch (column) {
     case Column::Icon:
-        return {};
+        return String {};
     case Column::PID:
         return "PID"_short_string;
     case Column::TID:
@@ -95,7 +95,7 @@ String ProcessModel::column_name(int column) const
     case Column::Virtual:
         return "Virtual"_short_string;
     case Column::Physical:
-        return "Physical"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Physical"_string);
     case Column::DirtyPrivate:
         return "Private"_short_string;
     case Column::CleanInode:
@@ -107,11 +107,11 @@ String ProcessModel::column_name(int column) const
     case Column::CPU:
         return "CPU"_short_string;
     case Column::Processor:
-        return "Processor"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Processor"_string);
     case Column::Name:
         return "Name"_short_string;
     case Column::Syscalls:
-        return "Syscalls"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Syscalls"_string);
     case Column::InodeFaults:
         return "F:Inode"_short_string;
     case Column::ZeroFaults:
@@ -121,15 +121,15 @@ String ProcessModel::column_name(int column) const
     case Column::IPv4SocketReadBytes:
         return "IPv4 In"_short_string;
     case Column::IPv4SocketWriteBytes:
-        return "IPv4 Out"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("IPv4 Out"_string);
     case Column::UnixSocketReadBytes:
         return "Unix In"_short_string;
     case Column::UnixSocketWriteBytes:
-        return "Unix Out"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Unix Out"_string);
     case Column::FileReadBytes:
         return "File In"_short_string;
     case Column::FileWriteBytes:
-        return "File Out"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("File Out"_string);
     case Column::Pledge:
         return "Pledge"_short_string;
     case Column::Veil:
diff --git a/Userland/Applications/SystemMonitor/ProcessModel.h b/Userland/Applications/SystemMonitor/ProcessModel.h
index d26a63b5fd..973008cf69 100644
--- a/Userland/Applications/SystemMonitor/ProcessModel.h
+++ b/Userland/Applications/SystemMonitor/ProcessModel.h
@@ -63,7 +63,7 @@ public:
     virtual int tree_column() const override { return Column::Name; }
     virtual int row_count(GUI::ModelIndex const&) const override;
     virtual int column_count(GUI::ModelIndex const&) const override;
-    virtual String column_name(int column) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual GUI::ModelIndex index(int row, int column, GUI::ModelIndex const& parent = {}) const override;
     virtual GUI::ModelIndex parent_index(GUI::ModelIndex const&) const override;
diff --git a/Userland/Applications/SystemMonitor/ProcessStateWidget.cpp b/Userland/Applications/SystemMonitor/ProcessStateWidget.cpp
index 3ffe236a18..065ab41e6c 100644
--- a/Userland/Applications/SystemMonitor/ProcessStateWidget.cpp
+++ b/Userland/Applications/SystemMonitor/ProcessStateWidget.cpp
@@ -48,7 +48,7 @@ public:
                     // NOTE: The icon column is nameless in ProcessModel, but we want it to have a name here.
                     return "Icon";
                 }
-                return m_target.column_name(index.row());
+                return m_target.column_name(index.row()).release_value_but_fixme_should_propagate_errors();
             }
             return m_target_index.sibling_at_column(index.row()).data();
         }
diff --git a/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp b/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
index a1bc060df8..5be4316650 100644
--- a/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
+++ b/Userland/Applications/SystemMonitor/ThreadStackWidget.cpp
@@ -30,7 +30,7 @@ public:
     int row_count(GUI::ModelIndex const&) const override { return m_symbols.size(); };
     bool is_column_sortable(int) const override { return false; }
 
-    String column_name(int column) const override
+    ErrorOr<String> column_name(int column) const override
     {
         switch (column) {
         case Column::Address:
diff --git a/Userland/Applications/SystemMonitor/main.cpp b/Userland/Applications/SystemMonitor/main.cpp
index 8fc3d2063a..4ecdb29171 100644
--- a/Userland/Applications/SystemMonitor/main.cpp
+++ b/Userland/Applications/SystemMonitor/main.cpp
@@ -303,7 +303,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     for (auto column = 0; column < ProcessModel::Column::__Count; ++column) {
         process_table_view.set_column_visible(column,
-            Config::read_bool("SystemMonitor"sv, "ProcessTableColumns"sv, process_model->column_name(column),
+            Config::read_bool("SystemMonitor"sv, "ProcessTableColumns"sv, TRY(process_model->column_name(column)),
                 process_model->is_default_column(column)));
     }
 
@@ -516,7 +516,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     // to be loaded the next time the application is opened.
     auto& process_table_header = process_table_view.column_header();
     for (auto column = 0; column < ProcessModel::Column::__Count; ++column)
-        Config::write_bool("SystemMonitor"sv, "ProcessTableColumns"sv, process_model->column_name(column), process_table_header.is_section_visible(column));
+        Config::write_bool("SystemMonitor"sv, "ProcessTableColumns"sv, TRY(process_model->column_name(column)), process_table_header.is_section_visible(column));
 
     return exec;
 }
diff --git a/Userland/Demos/ModelGallery/BasicModel.h b/Userland/Demos/ModelGallery/BasicModel.h
index 9e7fd9b581..91aec97914 100644
--- a/Userland/Demos/ModelGallery/BasicModel.h
+++ b/Userland/Demos/ModelGallery/BasicModel.h
@@ -20,7 +20,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return m_items.size(); }
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return 1; }
-    virtual String column_name(int) const override { return "Item"_short_string; }
+    virtual ErrorOr<String> column_name(int) const override { return "Item"_short_string; }
 
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole = GUI::ModelRole::Display) const override;
     virtual GUI::Model::MatchResult data_matches(GUI::ModelIndex const&, GUI::Variant const&) const override;
diff --git a/Userland/Demos/WidgetGallery/GalleryModels.h b/Userland/Demos/WidgetGallery/GalleryModels.h
index 166ae540e0..dafb3969de 100644
--- a/Userland/Demos/WidgetGallery/GalleryModels.h
+++ b/Userland/Demos/WidgetGallery/GalleryModels.h
@@ -27,11 +27,11 @@ public:
 
     virtual int row_count(const GUI::ModelIndex&) const override { return m_cursors.size(); }
     virtual int column_count(const GUI::ModelIndex&) const override { return Column::__Count; }
-    virtual String column_name(int column_index) const override
+    virtual ErrorOr<String> column_name(int column_index) const override
     {
         switch (column_index) {
         case Column::Bitmap:
-            return {};
+            return String {};
         case Column::Name:
             return "Name"_short_string;
         }
@@ -112,13 +112,13 @@ public:
 
     virtual int row_count(const GUI::ModelIndex&) const override { return m_icon_sets.size(); }
     virtual int column_count(const GUI::ModelIndex&) const override { return Column::__Count; }
-    virtual String column_name(int column_index) const override
+    virtual ErrorOr<String> column_name(int column_index) const override
     {
         switch (column_index) {
         case Column::BigIcon:
-            return {};
+            return String {};
         case Column::LittleIcon:
-            return {};
+            return String {};
         case Column::Name:
             return "Name"_short_string;
         }
diff --git a/Userland/DevTools/HackStudio/Debugger/BacktraceModel.h b/Userland/DevTools/HackStudio/Debugger/BacktraceModel.h
index bde27ab71b..56e9b5e30d 100644
--- a/Userland/DevTools/HackStudio/Debugger/BacktraceModel.h
+++ b/Userland/DevTools/HackStudio/Debugger/BacktraceModel.h
@@ -27,7 +27,7 @@ public:
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_frames.size(); }
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return 1; }
 
-    virtual String column_name(int) const override { return {}; }
+    virtual ErrorOr<String> column_name(int) const override { return String {}; }
 
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
diff --git a/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.cpp b/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.cpp
index 309e1b7b65..a67b4d93d7 100644
--- a/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.cpp
+++ b/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.cpp
@@ -73,18 +73,17 @@ int DisassemblyModel::row_count(const GUI::ModelIndex&) const
     return m_instructions.size();
 }
 
-String DisassemblyModel::column_name(int column) const
+ErrorOr<String> DisassemblyModel::column_name(int column) const
 {
     switch (column) {
     case Column::Address:
         return "Address"_short_string;
     case Column::InstructionBytes:
-        return "Insn Bytes"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Insn Bytes"_string);
     case Column::Disassembly:
-        return "Disassembly"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Disassembly"_string);
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.h b/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.h
index a4c867b3ba..33ee35777d 100644
--- a/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.h
+++ b/Userland/DevTools/HackStudio/Debugger/DisassemblyModel.h
@@ -45,7 +45,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
 private:
diff --git a/Userland/DevTools/HackStudio/Debugger/RegistersModel.cpp b/Userland/DevTools/HackStudio/Debugger/RegistersModel.cpp
index 574fa54a67..d756848890 100644
--- a/Userland/DevTools/HackStudio/Debugger/RegistersModel.cpp
+++ b/Userland/DevTools/HackStudio/Debugger/RegistersModel.cpp
@@ -86,16 +86,15 @@ int RegistersModel::row_count(const GUI::ModelIndex&) const
     return m_registers.size();
 }
 
-String RegistersModel::column_name(int column) const
+ErrorOr<String> RegistersModel::column_name(int column) const
 {
     switch (column) {
     case Column::Register:
-        return "Register"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Register"_string);
     case Column::Value:
         return "Value"_short_string;
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/HackStudio/Debugger/RegistersModel.h b/Userland/DevTools/HackStudio/Debugger/RegistersModel.h
index c13621ded2..0d4505b2ea 100644
--- a/Userland/DevTools/HackStudio/Debugger/RegistersModel.h
+++ b/Userland/DevTools/HackStudio/Debugger/RegistersModel.h
@@ -41,7 +41,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
     PtraceRegisters const& raw_registers() const { return m_raw_registers; }
diff --git a/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.cpp b/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.cpp
index 3e38967d4e..9e69fa0498 100644
--- a/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.cpp
+++ b/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.cpp
@@ -53,7 +53,7 @@ int ProjectTemplatesModel::column_count(const GUI::ModelIndex&) const
     return Column::__Count;
 }
 
-String ProjectTemplatesModel::column_name(int column) const
+ErrorOr<String> ProjectTemplatesModel::column_name(int column) const
 {
     switch (column) {
     case Column::Icon:
diff --git a/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.h b/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.h
index f52585953d..c897632f6a 100644
--- a/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.h
+++ b/Userland/DevTools/HackStudio/Dialogs/ProjectTemplatesModel.h
@@ -35,7 +35,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
     void update();
diff --git a/Userland/DevTools/HackStudio/FindInFilesWidget.cpp b/Userland/DevTools/HackStudio/FindInFilesWidget.cpp
index 97769c2783..77af7c784b 100644
--- a/Userland/DevTools/HackStudio/FindInFilesWidget.cpp
+++ b/Userland/DevTools/HackStudio/FindInFilesWidget.cpp
@@ -39,11 +39,11 @@ public:
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_matches.size(); }
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return Column::__Count; }
 
-    virtual String column_name(int column) const override
+    virtual ErrorOr<String> column_name(int column) const override
     {
         switch (column) {
         case Column::Filename:
-            return "Filename"_string.release_value_but_fixme_should_propagate_errors();
+            return TRY("Filename"_string);
         case Column::Location:
             return "#"_short_string;
         case Column::MatchedText:
diff --git a/Userland/DevTools/HackStudio/Git/GitFilesModel.h b/Userland/DevTools/HackStudio/Git/GitFilesModel.h
index 20719d3abd..98921f40d9 100644
--- a/Userland/DevTools/HackStudio/Git/GitFilesModel.h
+++ b/Userland/DevTools/HackStudio/Git/GitFilesModel.h
@@ -19,7 +19,7 @@ public:
     virtual int row_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return m_files.size(); }
     virtual int column_count(const GUI::ModelIndex& = GUI::ModelIndex()) const override { return 1; }
 
-    virtual String column_name(int) const override { return {}; }
+    virtual ErrorOr<String> column_name(int) const override { return String {}; }
 
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
diff --git a/Userland/DevTools/HackStudio/ToDoEntriesWidget.cpp b/Userland/DevTools/HackStudio/ToDoEntriesWidget.cpp
index 466d6e69b2..6a4a381147 100644
--- a/Userland/DevTools/HackStudio/ToDoEntriesWidget.cpp
+++ b/Userland/DevTools/HackStudio/ToDoEntriesWidget.cpp
@@ -30,11 +30,11 @@ public:
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return m_matches.size(); }
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
 
-    virtual String column_name(int column) const override
+    virtual ErrorOr<String> column_name(int column) const override
     {
         switch (column) {
         case Column::Filename:
-            return "Filename"_string.release_value_but_fixme_should_propagate_errors();
+            return TRY("Filename"_string);
         case Column::Text:
             return "Text"_short_string;
         case Column::Line:
diff --git a/Userland/DevTools/Profiler/DisassemblyModel.cpp b/Userland/DevTools/Profiler/DisassemblyModel.cpp
index d6211e0ba6..de88b3eee8 100644
--- a/Userland/DevTools/Profiler/DisassemblyModel.cpp
+++ b/Userland/DevTools/Profiler/DisassemblyModel.cpp
@@ -131,22 +131,21 @@ int DisassemblyModel::row_count(GUI::ModelIndex const&) const
     return m_instructions.size();
 }
 
-String DisassemblyModel::column_name(int column) const
+ErrorOr<String> DisassemblyModel::column_name(int column) const
 {
     switch (column) {
     case Column::SampleCount:
-        return m_profile.show_percentages() ? "% Samples"_string.release_value_but_fixme_should_propagate_errors() : "# Samples"_string.release_value_but_fixme_should_propagate_errors();
+        return m_profile.show_percentages() ? TRY("% Samples"_string) : TRY("# Samples"_string);
     case Column::Address:
         return "Address"_short_string;
     case Column::InstructionBytes:
-        return "Insn Bytes"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Insn Bytes"_string);
     case Column::Disassembly:
-        return "Disassembly"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Disassembly"_string);
     case Column::SourceLocation:
-        return "Source Location"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Source Location"_string);
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/Profiler/DisassemblyModel.h b/Userland/DevTools/Profiler/DisassemblyModel.h
index cd3a6f47e8..1c301faeca 100644
--- a/Userland/DevTools/Profiler/DisassemblyModel.h
+++ b/Userland/DevTools/Profiler/DisassemblyModel.h
@@ -46,7 +46,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual bool is_column_sortable(int) const override { return false; }
 
diff --git a/Userland/DevTools/Profiler/FilesystemEventModel.cpp b/Userland/DevTools/Profiler/FilesystemEventModel.cpp
index 4ab7c5ec05..3d6fefb035 100644
--- a/Userland/DevTools/Profiler/FilesystemEventModel.cpp
+++ b/Userland/DevTools/Profiler/FilesystemEventModel.cpp
@@ -142,18 +142,17 @@ int FileEventModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String FileEventModel::column_name(int column) const
+ErrorOr<String> FileEventModel::column_name(int column) const
 {
     switch (column) {
     case Column::Path:
         return "Path"_short_string;
     case Column::Count:
-        return "Event Count"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Event Count"_string);
     case Column::Duration:
-        return "Duration [ms]"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Duration [ms]"_string);
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/Profiler/FilesystemEventModel.h b/Userland/DevTools/Profiler/FilesystemEventModel.h
index 27a75a4347..784484ecd6 100644
--- a/Userland/DevTools/Profiler/FilesystemEventModel.h
+++ b/Userland/DevTools/Profiler/FilesystemEventModel.h
@@ -74,7 +74,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual GUI::ModelIndex index(int row, int column, GUI::ModelIndex const& parent = GUI::ModelIndex()) const override;
     virtual GUI::ModelIndex parent_index(GUI::ModelIndex const&) const override;
diff --git a/Userland/DevTools/Profiler/IndividualSampleModel.cpp b/Userland/DevTools/Profiler/IndividualSampleModel.cpp
index 9b56984f0a..b25a371d36 100644
--- a/Userland/DevTools/Profiler/IndividualSampleModel.cpp
+++ b/Userland/DevTools/Profiler/IndividualSampleModel.cpp
@@ -29,7 +29,7 @@ int IndividualSampleModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String IndividualSampleModel::column_name(int column) const
+ErrorOr<String> IndividualSampleModel::column_name(int column) const
 {
     switch (column) {
     case Column::Address:
diff --git a/Userland/DevTools/Profiler/IndividualSampleModel.h b/Userland/DevTools/Profiler/IndividualSampleModel.h
index d499f62338..3b1102b06e 100644
--- a/Userland/DevTools/Profiler/IndividualSampleModel.h
+++ b/Userland/DevTools/Profiler/IndividualSampleModel.h
@@ -31,7 +31,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
 
 private:
diff --git a/Userland/DevTools/Profiler/ProfileModel.cpp b/Userland/DevTools/Profiler/ProfileModel.cpp
index 9c98a9d6b8..b1198b8ec1 100644
--- a/Userland/DevTools/Profiler/ProfileModel.cpp
+++ b/Userland/DevTools/Profiler/ProfileModel.cpp
@@ -74,22 +74,21 @@ int ProfileModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String ProfileModel::column_name(int column) const
+ErrorOr<String> ProfileModel::column_name(int column) const
 {
     switch (column) {
     case Column::SampleCount:
-        return m_profile.show_percentages() ? "% Samples"_string.release_value_but_fixme_should_propagate_errors() : "# Samples"_string.release_value_but_fixme_should_propagate_errors();
+        return m_profile.show_percentages() ? TRY("% Samples"_string) : TRY("# Samples"_string);
     case Column::SelfCount:
         return m_profile.show_percentages() ? "% Self"_short_string : "# Self"_short_string;
     case Column::ObjectName:
         return "Object"_short_string;
     case Column::StackFrame:
-        return "Stack Frame"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Stack Frame"_string);
     case Column::SymbolAddress:
-        return "Symbol Address"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Symbol Address"_string);
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/Profiler/ProfileModel.h b/Userland/DevTools/Profiler/ProfileModel.h
index 6b05de1ca9..e94a03e8b8 100644
--- a/Userland/DevTools/Profiler/ProfileModel.h
+++ b/Userland/DevTools/Profiler/ProfileModel.h
@@ -34,7 +34,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual GUI::ModelIndex index(int row, int column, GUI::ModelIndex const& parent = GUI::ModelIndex()) const override;
     virtual GUI::ModelIndex parent_index(GUI::ModelIndex const&) const override;
diff --git a/Userland/DevTools/Profiler/SamplesModel.cpp b/Userland/DevTools/Profiler/SamplesModel.cpp
index 5a44a38f2d..5e33a20555 100644
--- a/Userland/DevTools/Profiler/SamplesModel.cpp
+++ b/Userland/DevTools/Profiler/SamplesModel.cpp
@@ -28,23 +28,23 @@ int SamplesModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String SamplesModel::column_name(int column) const
+ErrorOr<String> SamplesModel::column_name(int column) const
 {
     switch (column) {
     case Column::SampleIndex:
         return "#"_short_string;
     case Column::Timestamp:
-        return "Timestamp"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Timestamp"_string);
     case Column::ProcessID:
         return "PID"_short_string;
     case Column::ThreadID:
         return "TID"_short_string;
     case Column::ExecutableName:
-        return "Executable"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Executable"_string);
     case Column::LostSamples:
-        return "Lost Samples"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Lost Samples"_string);
     case Column::InnermostStackFrame:
-        return "Innermost Frame"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Innermost Frame"_string);
     case Column::Path:
         return "Path"_short_string;
     default:
diff --git a/Userland/DevTools/Profiler/SamplesModel.h b/Userland/DevTools/Profiler/SamplesModel.h
index 144307b5bf..fe91f7d8cf 100644
--- a/Userland/DevTools/Profiler/SamplesModel.h
+++ b/Userland/DevTools/Profiler/SamplesModel.h
@@ -36,7 +36,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual bool is_column_sortable(int) const override { return false; }
 
diff --git a/Userland/DevTools/Profiler/SignpostsModel.cpp b/Userland/DevTools/Profiler/SignpostsModel.cpp
index 2f54720b9c..896227d8a0 100644
--- a/Userland/DevTools/Profiler/SignpostsModel.cpp
+++ b/Userland/DevTools/Profiler/SignpostsModel.cpp
@@ -26,23 +26,23 @@ int SignpostsModel::column_count(GUI::ModelIndex const&) const
     return Column::__Count;
 }
 
-String SignpostsModel::column_name(int column) const
+ErrorOr<String> SignpostsModel::column_name(int column) const
 {
     switch (column) {
     case Column::SignpostIndex:
         return "#"_short_string;
     case Column::Timestamp:
-        return "Timestamp"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Timestamp"_string);
     case Column::ProcessID:
         return "PID"_short_string;
     case Column::ThreadID:
         return "TID"_short_string;
     case Column::ExecutableName:
-        return "Executable"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Executable"_string);
     case Column::SignpostString:
         return "String"_short_string;
     case Column::SignpostArgument:
-        return "Argument"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Argument"_string);
     default:
         VERIFY_NOT_REACHED();
     }
diff --git a/Userland/DevTools/Profiler/SignpostsModel.h b/Userland/DevTools/Profiler/SignpostsModel.h
index f227f3a952..8f7b5871e9 100644
--- a/Userland/DevTools/Profiler/SignpostsModel.h
+++ b/Userland/DevTools/Profiler/SignpostsModel.h
@@ -35,7 +35,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual bool is_column_sortable(int) const override { return false; }
 
diff --git a/Userland/DevTools/Profiler/SourceModel.cpp b/Userland/DevTools/Profiler/SourceModel.cpp
index 90797d1eb7..9cda3c952c 100644
--- a/Userland/DevTools/Profiler/SourceModel.cpp
+++ b/Userland/DevTools/Profiler/SourceModel.cpp
@@ -122,20 +122,19 @@ int SourceModel::row_count(GUI::ModelIndex const&) const
     return m_source_lines.size();
 }
 
-String SourceModel::column_name(int column) const
+ErrorOr<String> SourceModel::column_name(int column) const
 {
     switch (column) {
     case Column::SampleCount:
-        return m_profile.show_percentages() ? "% Samples"_string.release_value_but_fixme_should_propagate_errors() : "# Samples"_string.release_value_but_fixme_should_propagate_errors();
+        return m_profile.show_percentages() ? TRY("% Samples"_string) : TRY("# Samples"_string);
     case Column::SourceCode:
-        return "Source Code"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Source Code"_string);
     case Column::Location:
-        return "Location"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Location"_string);
     case Column::LineNumber:
         return "Line"_short_string;
     default:
         VERIFY_NOT_REACHED();
-        return {};
     }
 }
 
diff --git a/Userland/DevTools/Profiler/SourceModel.h b/Userland/DevTools/Profiler/SourceModel.h
index 0dded94fc3..af85480a4a 100644
--- a/Userland/DevTools/Profiler/SourceModel.h
+++ b/Userland/DevTools/Profiler/SourceModel.h
@@ -38,7 +38,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual bool is_column_sortable(int) const override { return false; }
 
diff --git a/Userland/Libraries/LibGUI/AbstractTableView.cpp b/Userland/Libraries/LibGUI/AbstractTableView.cpp
index 2c73e23492..8e00f6a32d 100644
--- a/Userland/Libraries/LibGUI/AbstractTableView.cpp
+++ b/Userland/Libraries/LibGUI/AbstractTableView.cpp
@@ -58,7 +58,7 @@ void AbstractTableView::auto_resize_column(int column)
     auto& model = *this->model();
     int row_count = model.row_count();
 
-    int header_width = m_column_header->font().width(model.column_name(column));
+    int header_width = m_column_header->font().width(model.column_name(column).release_value_but_fixme_should_propagate_errors());
     if (column == m_key_column && model.is_column_sortable(column))
         header_width += HeaderView::sorting_arrow_width + HeaderView::sorting_arrow_offset;
 
@@ -97,7 +97,7 @@ void AbstractTableView::update_column_sizes()
     for (int column = 0; column < column_count; ++column) {
         if (!column_header().is_section_visible(column))
             continue;
-        int header_width = m_column_header->font().width(model.column_name(column));
+        int header_width = m_column_header->font().width(model.column_name(column).release_value_but_fixme_should_propagate_errors());
         if (column == m_key_column && model.is_column_sortable(column))
             header_width += HeaderView::sorting_arrow_width + HeaderView::sorting_arrow_offset;
         int column_width = header_width;
diff --git a/Userland/Libraries/LibGUI/CommandPalette.cpp b/Userland/Libraries/LibGUI/CommandPalette.cpp
index 2159835161..f1902f1552 100644
--- a/Userland/Libraries/LibGUI/CommandPalette.cpp
+++ b/Userland/Libraries/LibGUI/CommandPalette.cpp
@@ -92,7 +92,7 @@ public:
         return Column::__Count;
     }
 
-    virtual String column_name(int) const override { return {}; }
+    virtual ErrorOr<String> column_name(int) const override { return String {}; }
 
     virtual ModelIndex index(int row, int column = 0, ModelIndex const& = ModelIndex()) const override
     {
diff --git a/Userland/Libraries/LibGUI/FileSystemModel.cpp b/Userland/Libraries/LibGUI/FileSystemModel.cpp
index 425c9c7ad6..4875e7cb4e 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.cpp
+++ b/Userland/Libraries/LibGUI/FileSystemModel.cpp
@@ -761,11 +761,11 @@ int FileSystemModel::column_count(ModelIndex const&) const
     return Column::__Count;
 }
 
-String FileSystemModel::column_name(int column) const
+ErrorOr<String> FileSystemModel::column_name(int column) const
 {
     switch (column) {
     case Column::Icon:
-        return {};
+        return String {};
     case Column::Name:
         return "Name"_short_string;
     case Column::Size:
@@ -777,11 +777,11 @@ String FileSystemModel::column_name(int column) const
     case Column::Permissions:
         return "Mode"_short_string;
     case Column::ModificationTime:
-        return "Modified"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Modified"_string);
     case Column::Inode:
         return "Inode"_short_string;
     case Column::SymlinkTarget:
-        return "Symlink target"_string.release_value_but_fixme_should_propagate_errors();
+        return TRY("Symlink target"_string);
     }
     VERIFY_NOT_REACHED();
 }
diff --git a/Userland/Libraries/LibGUI/FileSystemModel.h b/Userland/Libraries/LibGUI/FileSystemModel.h
index fa2250a3cd..fa9535ac51 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.h
+++ b/Userland/Libraries/LibGUI/FileSystemModel.h
@@ -127,7 +127,7 @@ public:
     virtual int tree_column() const override { return Column::Name; }
     virtual int row_count(ModelIndex const& = ModelIndex()) const override;
     virtual int column_count(ModelIndex const& = ModelIndex()) const override;
-    virtual String column_name(int column) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual Variant data(ModelIndex const&, ModelRole = ModelRole::Display) const override;
     virtual ModelIndex parent_index(ModelIndex const&) const override;
     virtual ModelIndex index(int row, int column = 0, ModelIndex const& parent = ModelIndex()) const override;
diff --git a/Userland/Libraries/LibGUI/FilteringProxyModel.cpp b/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
index e8097c5a3c..65f515df7e 100644
--- a/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
+++ b/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
@@ -34,7 +34,7 @@ int FilteringProxyModel::column_count(ModelIndex const& index) const
     return m_model->column_count(m_matching_indices[index.row()].index);
 }
 
-String FilteringProxyModel::column_name(int column) const
+ErrorOr<String> FilteringProxyModel::column_name(int column) const
 {
     return m_model->column_name(column);
 }
diff --git a/Userland/Libraries/LibGUI/FilteringProxyModel.h b/Userland/Libraries/LibGUI/FilteringProxyModel.h
index 8c01b1aacd..4506aa6cd5 100644
--- a/Userland/Libraries/LibGUI/FilteringProxyModel.h
+++ b/Userland/Libraries/LibGUI/FilteringProxyModel.h
@@ -35,7 +35,7 @@ public:
 
     virtual int row_count(ModelIndex const& = ModelIndex()) const override;
     virtual int column_count(ModelIndex const& = ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual Variant data(ModelIndex const&, ModelRole = ModelRole::Display) const override;
     virtual void invalidate() override;
     virtual ModelIndex index(int row, int column = 0, ModelIndex const& parent = ModelIndex()) const override;
diff --git a/Userland/Libraries/LibGUI/HeaderView.cpp b/Userland/Libraries/LibGUI/HeaderView.cpp
index 834cb76da3..c6ff384136 100644
--- a/Userland/Libraries/LibGUI/HeaderView.cpp
+++ b/Userland/Libraries/LibGUI/HeaderView.cpp
@@ -265,7 +265,7 @@ void HeaderView::paint_horizontal(Painter& painter)
         bool hovered = section == m_hovered_section && model()->is_column_sortable(section);
         Gfx::StylePainter::paint_button(painter, cell_rect, palette(), Gfx::ButtonStyle::Normal, pressed, hovered);
 
-        auto text = model()->column_name(section);
+        auto text = model()->column_name(section).release_value_but_fixme_should_propagate_errors();
         auto text_rect = cell_rect.shrunken(m_table_view.horizontal_padding() * 2, 0);
         if (pressed)
             text_rect.translate_by(1, 1);
@@ -358,7 +358,7 @@ Menu& HeaderView::ensure_context_menu()
         int section_count = this->section_count();
         for (int section = 0; section < section_count; ++section) {
             auto& column_data = this->section_data(section);
-            auto name = model()->column_name(section).to_deprecated_string();
+            auto name = model()->column_name(section).release_value_but_fixme_should_propagate_errors().to_deprecated_string();
             column_data.visibility_action = Action::create_checkable(name, [this, section](auto& action) {
                 set_section_visible(section, action.is_checked());
             });
diff --git a/Userland/Libraries/LibGUI/ItemListModel.h b/Userland/Libraries/LibGUI/ItemListModel.h
index db6b24c968..ef49320e74 100644
--- a/Userland/Libraries/LibGUI/ItemListModel.h
+++ b/Userland/Libraries/LibGUI/ItemListModel.h
@@ -71,7 +71,7 @@ public:
         return 1;
     }
 
-    virtual String column_name(int index) const override
+    virtual ErrorOr<String> column_name(int index) const override
     {
         if constexpr (IsTwoDimensional)
             return m_column_names[index];
diff --git a/Userland/Libraries/LibGUI/JsonArrayModel.h b/Userland/Libraries/LibGUI/JsonArrayModel.h
index 1913da23b1..922a6e2c95 100644
--- a/Userland/Libraries/LibGUI/JsonArrayModel.h
+++ b/Userland/Libraries/LibGUI/JsonArrayModel.h
@@ -49,7 +49,7 @@ public:
 
     virtual int row_count(ModelIndex const& = ModelIndex()) const override { return m_array.size(); }
     virtual int column_count(ModelIndex const& = ModelIndex()) const override { return m_fields.size(); }
-    virtual String column_name(int column) const override { return m_fields[column].column_name; }
+    virtual ErrorOr<String> column_name(int column) const override { return m_fields[column].column_name; }
     virtual Variant data(ModelIndex const&, ModelRole = ModelRole::Display) const override;
     virtual void invalidate() override;
     virtual void update();
diff --git a/Userland/Libraries/LibGUI/Model.h b/Userland/Libraries/LibGUI/Model.h
index fcf86035bc..a2f038e74c 100644
--- a/Userland/Libraries/LibGUI/Model.h
+++ b/Userland/Libraries/LibGUI/Model.h
@@ -71,7 +71,7 @@ public:
 
     virtual int row_count(ModelIndex const& = ModelIndex()) const = 0;
     virtual int column_count(ModelIndex const& = ModelIndex()) const = 0;
-    virtual String column_name(int) const { return {}; }
+    virtual ErrorOr<String> column_name(int) const { return String {}; }
     virtual Variant data(ModelIndex const&, ModelRole = ModelRole::Display) const = 0;
     virtual MatchResult data_matches(ModelIndex const&, Variant const&) const { return {}; }
     virtual void invalidate();
diff --git a/Userland/Libraries/LibGUI/RunningProcessesModel.cpp b/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
index 8df445bea9..6c3f15227f 100644
--- a/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
+++ b/Userland/Libraries/LibGUI/RunningProcessesModel.cpp
@@ -45,11 +45,11 @@ int RunningProcessesModel::column_count(const GUI::ModelIndex&) const
     return Column::__Count;
 }
 
-String RunningProcessesModel::column_name(int column_index) const
+ErrorOr<String> RunningProcessesModel::column_name(int column_index) const
 {
     switch (column_index) {
     case Column::Icon:
-        return {};
+        return String {};
     case Column::PID:
         return "PID"_short_string;
     case Column::UID:
diff --git a/Userland/Libraries/LibGUI/RunningProcessesModel.h b/Userland/Libraries/LibGUI/RunningProcessesModel.h
index 5f0ed6d08a..7a0343c403 100644
--- a/Userland/Libraries/LibGUI/RunningProcessesModel.h
+++ b/Userland/Libraries/LibGUI/RunningProcessesModel.h
@@ -27,7 +27,7 @@ public:
 
     virtual int row_count(const GUI::ModelIndex&) const override;
     virtual int column_count(const GUI::ModelIndex&) const override;
-    virtual String column_name(int column_index) const override;
+    virtual ErrorOr<String> column_name(int column_index) const override;
     virtual GUI::Variant data(const GUI::ModelIndex&, GUI::ModelRole) const override;
 
     void update();
diff --git a/Userland/Libraries/LibGUI/SortingProxyModel.cpp b/Userland/Libraries/LibGUI/SortingProxyModel.cpp
index 37c8509eff..6357a16552 100644
--- a/Userland/Libraries/LibGUI/SortingProxyModel.cpp
+++ b/Userland/Libraries/LibGUI/SortingProxyModel.cpp
@@ -106,7 +106,7 @@ ModelIndex SortingProxyModel::map_to_proxy(ModelIndex const& source_index) const
     return create_index(proxy_row, proxy_column, &mapping);
 }
 
-String SortingProxyModel::column_name(int column) const
+ErrorOr<String> SortingProxyModel::column_name(int column) const
 {
     return source().column_name(column);
 }
diff --git a/Userland/Libraries/LibGUI/SortingProxyModel.h b/Userland/Libraries/LibGUI/SortingProxyModel.h
index 84627704f0..84a3a35b9f 100644
--- a/Userland/Libraries/LibGUI/SortingProxyModel.h
+++ b/Userland/Libraries/LibGUI/SortingProxyModel.h
@@ -24,7 +24,7 @@ public:
     virtual int tree_column() const override { return m_source->tree_column(); }
     virtual int row_count(ModelIndex const& = ModelIndex()) const override;
     virtual int column_count(ModelIndex const& = ModelIndex()) const override;
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual Variant data(ModelIndex const&, ModelRole = ModelRole::Display) const override;
     virtual void invalidate() override;
     virtual StringView drag_data_type() const override;
diff --git a/Userland/Libraries/LibGUI/TreeView.cpp b/Userland/Libraries/LibGUI/TreeView.cpp
index 7407cd29b9..3e2b2746d6 100644
--- a/Userland/Libraries/LibGUI/TreeView.cpp
+++ b/Userland/Libraries/LibGUI/TreeView.cpp
@@ -673,7 +673,7 @@ void TreeView::auto_resize_column(int column)
 
     auto& model = *this->model();
 
-    int header_width = column_header().font().width(model.column_name(column));
+    int header_width = column_header().font().width(model.column_name(column).release_value_but_fixme_should_propagate_errors());
     if (column == m_key_column && model.is_column_sortable(column))
         header_width += HeaderView::sorting_arrow_width + HeaderView::sorting_arrow_offset;
     int column_width = header_width;
@@ -718,7 +718,7 @@ void TreeView::update_column_sizes()
             continue;
         if (!column_header().is_section_visible(column))
             continue;
-        int header_width = column_header().font().width(model.column_name(column));
+        int header_width = column_header().font().width(model.column_name(column).release_value_but_fixme_should_propagate_errors());
         if (column == m_key_column && model.is_column_sortable(column))
             header_width += HeaderView::sorting_arrow_width + HeaderView::sorting_arrow_offset;
         int column_width = header_width;
@@ -739,7 +739,7 @@ void TreeView::update_column_sizes()
         set_column_width(column, max(this->column_width(column), column_width));
     }
 
-    int tree_column_header_width = column_header().font().width(model.column_name(tree_column));
+    int tree_column_header_width = column_header().font().width(model.column_name(tree_column).release_value_but_fixme_should_propagate_errors());
     if (tree_column == m_key_column && model.is_column_sortable(tree_column))
         tree_column_header_width += HeaderView::sorting_arrow_width + HeaderView::sorting_arrow_offset;
     int tree_column_width = tree_column_header_width;
diff --git a/Userland/Libraries/LibWebView/StylePropertiesModel.cpp b/Userland/Libraries/LibWebView/StylePropertiesModel.cpp
index 4d903463fd..b3367ee087 100644
--- a/Userland/Libraries/LibWebView/StylePropertiesModel.cpp
+++ b/Userland/Libraries/LibWebView/StylePropertiesModel.cpp
@@ -30,7 +30,7 @@ int StylePropertiesModel::row_count(GUI::ModelIndex const&) const
     return m_values.size();
 }
 
-String StylePropertiesModel::column_name(int column_index) const
+ErrorOr<String> StylePropertiesModel::column_name(int column_index) const
 {
     switch (column_index) {
     case Column::PropertyName:
diff --git a/Userland/Libraries/LibWebView/StylePropertiesModel.h b/Userland/Libraries/LibWebView/StylePropertiesModel.h
index c92070b35d..87a2d78912 100644
--- a/Userland/Libraries/LibWebView/StylePropertiesModel.h
+++ b/Userland/Libraries/LibWebView/StylePropertiesModel.h
@@ -31,7 +31,7 @@ public:
 
     virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
     virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
-    virtual String column_name(int) const override;
+    virtual ErrorOr<String> column_name(int) const override;
     virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
     virtual bool is_searchable() const override { return true; }
     virtual Vector<GUI::ModelIndex> matches(StringView, unsigned flags, GUI::ModelIndex const&) override;