No Grid with name PART_DialogHostRoot found

[herry-go]

platform: linux

arch: amd64

err: System.InvalidOperationException: No Grid with name PART_DialogHostRoot found
at DialogHostAvalonia.DialogHost.OnApplyTemplate(TemplateAppliedEventArgs e)
at Avalonia.Controls.Primitives.TemplatedControl.ApplyTemplate()
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.LayoutHelper.MeasureChild(Layoutable control, Size availableSize, Thickness padding, Thickness borderThickness)
at Avalonia.Controls.Presenters.ContentPresenter.MeasureOverride(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.LayoutHelper.MeasureChild(Layoutable control, Size availableSize, Thickness padding, Thickness borderThickness)
at Avalonia.Controls.Presenters.ContentPresenter.MeasureOverride(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.LayoutHelper.MeasureChild(Layoutable control, Size availableSize, Thickness padding)
at Avalonia.Controls.Decorator.MeasureOverride(Size availableSize)
at Avalonia.Controls.Primitives.VisualLayerManager.MeasureOverride(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.Layoutable.MeasureOverride(Size availableSize)
at Avalonia.Controls.Window.MeasureOverride(Size availableSize)
at Avalonia.Controls.WindowBase.MeasureCore(Size availableSize)
at Avalonia.Layout.Layoutable.Measure(Size availableSize)
at Avalonia.Layout.LayoutManager.Measure(Layoutable control)
at Avalonia.Layout.LayoutManager.ExecuteInitialLayoutPass()
at Avalonia.Controls.Window.ShowCore(Window owner)
at Avalonia.Controls.Window.Show()
at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.ShowMainWindow()
at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.StartCore(String[] args)
at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.Start(String[] args)
at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime(AppBuilder builder, String[] args, Action`1 lifetimeBuilder)
at TemplateHelper.Program.Main(String[] args) in /home/herry/workspace/TemplateHelper/TemplateHelper/Program.cs:line 12

code:
<dialogHostAvalonia:DialogHost Identifier="MainDialogHost">
</dialogHostAvalonia:DialogHost>

[herry-go]

<Application.Styles>
...
<dialogHostAvalonia:DialogHostStyles />
</Application.Styles>