[Bug] Crash before launching with Exception System.InvalidOperationException: Default font family name can't be null or empty

[BiDuang]

Waiting Avalonia fix this issue.

[timunie]

can you test using latest nightly Avalonia version? I'd be interested if the recent workarounds help you in any way.

[BiDuang]

can you test using latest nightly Avalonia version? I'd be interested if the recent workarounds help you in any way.

It won't crash now, but if I try to load the font from a local resource, all the text disappears.

public static AppBuilder BuildAvaloniaApp()
    {
        IconProvider.Current.Register<FontAwesomeIconProvider>();
        return AppBuilder.Configure<App>()
            .UsePlatformDetect()
            //.WithInterFont()        If I don't want to use interfont
            .With(new FontManagerOptions
            {
                FontFallbacks = new[]
                {
                    new FontFallback
                    {
                        FontFamily = new FontFamily("avares://Chief/Assets/MicrosoftYaHei.ttf#Microsoft YaHei")
                    }
                }
            })
            .LogToTrace()
            .UseReactiveUI();
    }

But if we add interfont support, everything will work fine.

Hope these information could help you!

[timunie]

FontFamily = new FontFamily("avares://Chief/Assets/MicrosoftYaHei.ttf#Microsoft YaHei")

I have the feeling that this line is wrong somehow. You may need to load the font file itself from the assets before. Please scan GH discussions for reference.

[timunie]

example: AvaloniaUI/Avalonia#12555 (reply in thread)