Unhandled exception. System.InvalidOperationException: Default font family name can't be null or empty.
at Avalonia.Media.FontManager..ctor(IFontManagerImpl platformImpl) in /_/src/Avalonia.Visuals/Media/FontManager.cs:line 28
at Avalonia.Media.FontManager.get_Current() in /_/src/Avalonia.Visuals/Media/FontManager.cs:line 48
at Avalonia.Media.TextFormatting.TextCharacters.TryGetRunProperties(ReadOnlySlice`1 text, Typeface typeface, Typeface defaultTypeface, Int32& count) in /_/src/Avalonia.Visuals/Media/TextFormatting/TextCharacters.cs:line 129
at Avalonia.Media.TextFormatting.TextCharacters.CreateShapeableRun(ReadOnlySlice`1 text, TextRunProperties defaultProperties) in /_/src/Avalonia.Visuals/Media/TextFormatting/TextCharacters.cs:line 62
at Avalonia.Media.TextFormatting.TextCharacters.GetShapeableCharacters() in /_/src/Avalonia.Visuals/Media/TextFormatting/TextCharacters.cs:line 40
at Avalonia.Media.TextFormatting.TextFormatterImpl.FetchTextRuns(ITextSource textSource, Int32 firstTextSourceIndex, TextLineBreak previousLineBreak, TextLineBreak& nextLineBreak) in /_/src/Avalonia.Visuals/Media/TextFormatting/TextFormatterImpl.cs:line 280
at Avalonia.Media.TextFormatting.TextFormatterImpl.FormatLine(ITextSource textSource, Int32 firstTextSourceIndex, Double paragraphWidth, TextParagraphProperties paragraphProperties, TextLineBreak previousLineBreak) in /_/src/Avalonia.Visuals/Media/TextFormatting/TextFormatterImpl.cs:line 15
at Avalonia.Media.TextFormatting.TextLayout.UpdateLayout() in /_/src/Avalonia.Visuals/Media/TextFormatting/TextLayout.cs:line 223
at Avalonia.Media.TextFormatting.TextLayout..ctor(String text, Typeface typeface, Double fontSize, IBrush foreground, TextAlignment textAlignment, TextWrapping textWrapping, TextTrimming textTrimming, TextDecorationCollection textDecorations, Double maxWidth, Double maxHeight, Double lineHeight, Int32 maxLines, IReadOnlyList`1 textStyleOverrides) in /_/src/Avalonia.Visuals/Media/TextFormatting/TextLayout.cs:line 71
at Avalonia.Controls.TextBlock.CreateTextLayout(Size constraint, String text) in /_/src/Avalonia.Controls/TextBlock.cs:line 475
at Avalonia.Controls.TextBlock.get_TextLayout() in /_/src/Avalonia.Controls/TextBlock.cs:line 166
at Avalonia.Controls.TextBlock.MeasureOverride(Size availableSize) in /_/src/Avalonia.Controls/TextBlock.cs:line 521
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.LayoutHelper.MeasureChild(ILayoutable control, Size availableSize, Thickness padding) in /_/src/Avalonia.Layout/LayoutHelper.cs:line 46
at Avalonia.Layout.LayoutHelper.MeasureChild(ILayoutable control, Size availableSize, Thickness padding, Thickness borderThickness) in /_/src/Avalonia.Layout/LayoutHelper.cs:line 39
at Avalonia.Controls.Presenters.ContentPresenter.MeasureOverride(Size availableSize) in /_/src/Avalonia.Controls/Presenters/ContentPresenter.cs:line 366
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 625
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV) in /_/src/Avalonia.Controls/Grid.cs:line 1150
at Avalonia.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged) in /_/src/Avalonia.Controls/Grid.cs:line 1005
at Avalonia.Controls.Grid.MeasureOverride(Size constraint) in /_/src/Avalonia.Controls/Grid.cs:line 427
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.LayoutHelper.MeasureChild(ILayoutable control, Size availableSize, Thickness padding) in /_/src/Avalonia.Layout/LayoutHelper.cs:line 46
at Avalonia.Layout.LayoutHelper.MeasureChild(ILayoutable control, Size availableSize, Thickness padding, Thickness borderThickness) in /_/src/Avalonia.Layout/LayoutHelper.cs:line 39
at Avalonia.Controls.Presenters.ContentPresenter.MeasureOverride(Size availableSize) in /_/src/Avalonia.Controls/Presenters/ContentPresenter.cs:line 366
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.LayoutHelper.MeasureChild(ILayoutable control, Size availableSize, Thickness padding) in /_/src/Avalonia.Layout/LayoutHelper.cs:line 46
at Avalonia.Controls.Primitives.VisualLayerManager.MeasureOverride(Size availableSize) in /_/src/Avalonia.Controls/Primitives/VisualLayerManager.cs:line 133
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 625
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 559
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 625
at Avalonia.Controls.Window.MeasureOverride(Size availableSize) in /_/src/Avalonia.Controls/Window.cs:line 888
at Avalonia.Controls.WindowBase.MeasureCore(Size availableSize) in /_/src/Avalonia.Controls/WindowBase.cs:line 237
at Avalonia.Layout.Layoutable.Measure(Size availableSize) in /_/src/Avalonia.Layout/Layoutable.cs:line 364
at Avalonia.Layout.LayoutManager.Measure(ILayoutable control) in /_/src/Avalonia.Layout/LayoutManager.cs:line 287
at Avalonia.Layout.LayoutManager.ExecuteInitialLayoutPass() in /_/src/Avalonia.Layout/LayoutManager.cs:line 174
at Avalonia.Controls.Window.ShowCore(Window parent) in /_/src/Avalonia.Controls/Window.cs:line 688
at Avalonia.Controls.Window.Show() in /_/src/Avalonia.Controls/Window.cs:line 626
at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.Start(String[] args) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 125
at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime[T](T builder, String[] args, ShutdownMode shutdownMode) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 175
at Patcher.Program.Main(String[] args) in /home/kc/ussedp/Patcher/Program.cs:line 20
/home/kc/ussedp-FullPatcher.sh: line 3: 4604 Aborted (core dumped) ./Patcher