[Bug] "An item with the same key has already been added"

[orsinium]

Describe the bug

When trying to open the "Notebooks" tab, Slithin crashes. See the log file at the end of the issue description.

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Notebooks'

Expected behavior

The app doesn't crash 🙃

Screenshots

Inapplicable

Desktop (please complete the following information):

• OS: Windows 10

Additional context

2022-04-15 09:54:46.780 +02:00 [INF] Downloading 'xochitl.conf'
2022-04-15 09:54:46.885 +02:00 [INF] Initialize Screens
2022-04-15 09:54:46.897 +02:00 [INF] Loading Internal Tools
2022-04-15 09:54:47.025 +02:00 [INF] Checking for Updates
2022-04-15 09:54:47.537 +02:00 [INF] No Update found
2022-04-15 09:54:49.402 +02:00 [INF] Loading Notebooks
2022-04-15 09:54:49.422 +02:00 [INF] System.ArgumentException: An item with the same key has already been added. Key: [0, Avalonia.Controls.Generators.ItemContainerInfo]
   at System.Collections.Generic.TreeSet`1.AddIfNotPresent(T item)
   at System.Collections.Generic.SortedDictionary`2.Add(TKey key, TValue value)
   at Avalonia.Controls.Generators.ItemContainerGenerator.Materialize(Int32 index, Object item) in /_/src/Avalonia.Controls/Generators/ItemContainerGenerator.cs:line 58
   at Avalonia.Controls.Presenters.ItemContainerSync.AddContainers(ItemsPresenterBase owner, Int32 index, IEnumerable items) in /_/src/Avalonia.Controls/Presenters/ItemContainerSync.cs:line 91
   at Avalonia.Controls.Presenters.ItemContainerSync.<ItemsChanged>g__Add|0_0(<>c__DisplayClass0_0& ) in /_/src/Avalonia.Controls/Presenters/ItemContainerSync.cs:line 32
   at Avalonia.Controls.Presenters.ItemContainerSync.ItemsChanged(ItemsPresenterBase owner, IEnumerable items, NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/Presenters/ItemContainerSync.cs:line 43
   at Avalonia.Controls.Presenters.ItemVirtualizerNone.ItemsChanged(IEnumerable items, NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/Presenters/ItemVirtualizerNone.cs:line 59
   at Avalonia.Controls.Presenters.ItemsPresenter.ItemsChanged(NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/Presenters/ItemsPresenter.cs:line 162
   at Avalonia.Controls.Presenters.ItemsPresenterBase.Avalonia.Controls.Presenters.IItemsPresenter.ItemsChanged(NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/Presenters/ItemsPresenterBase.cs:line 159
   at Avalonia.Controls.ItemsControl.ItemsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/ItemsControl.cs:line 403
   at Avalonia.Controls.Primitives.SelectingItemsControl.ItemsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs:line 391
   at Avalonia.Controls.ItemsControl.Avalonia.Controls.Utils.ICollectionChangedListener.PostChanged(INotifyCollectionChanged sender, NotifyCollectionChangedEventArgs e) in /_/src/Avalonia.Controls/ItemsControl.cs:line 183
   at Avalonia.Controls.Utils.CollectionChangedEventManager.Entry.<Avalonia.Utilities.IWeakEventSubscriber<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.OnEvent>g__Notify|6_0(INotifyCollectionChanged incc, NotifyCollectionChangedEventArgs args, List`1 listeners) in /_/src/Avalonia.Controls/Utils/CollectionChangedEventManager.cs:line 132
   at Avalonia.Controls.Utils.CollectionChangedEventManager.Entry.<>c__DisplayClass6_0.<Avalonia.Utilities.IWeakEventSubscriber<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.OnEvent>b__1() in /_/src/Avalonia.Controls/Utils/CollectionChangedEventManager.cs:line 146
   at Avalonia.Threading.JobRunner.RunJobs(Nullable`1 priority) in /_/src/Avalonia.Base/Threading/JobRunner.cs:line 37
   at Avalonia.Win32.Win32Platform.WndProc(IntPtr hWnd, UInt32 msg, IntPtr wParam, IntPtr lParam) in /_/src/Windows/Avalonia.Win32/Win32Platform.cs:line 278
   at Avalonia.Win32.Interop.UnmanagedMethods.DispatchMessage(MSG& lpmsg)
   at Avalonia.Win32.Win32Platform.RunLoop(CancellationToken cancellationToken) in /_/src/Windows/Avalonia.Win32/Win32Platform.cs:line 205
   at Avalonia.Threading.Dispatcher.MainLoop(CancellationToken cancellationToken) in /_/src/Avalonia.Base/Threading/Dispatcher.cs:line 65
   at Avalonia.Controls.ApplicationLifetimes.ClassicDesktopStyleApplicationLifetime.Start(String[] args) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 120
   at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime[T](T builder, String[] args, ShutdownMode shutdownMode) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 209
   at Slithin.Program.Main(String[] args) in D:\a\Slithin\Slithin\Source\Slithin\Program.cs:line 21

[furesoft]

It seems to be fixed on version 1.0.13. Please let me know if it works for you now

[orsinium]

I faced another issue right at the startup (#149), so I couldn't test it yet. When that bug is resolved, I'll test this one too. Thank you for taking care of it.

[furesoft]

Look at the 1.0.14 version