[Bug]: Method not found: 'Splat.IMutableDependencyResolver Splat.Locator.get_CurrentMutable()'.

[laolarou726]

Describe the bug 🐞

After updated to 21.0.1 for my AvaloniaUI project, it throws this Exception during startup

Step to reproduce

RT

Reproduction repository

https://github.com/reactiveui/ReactiveUI

Expected behavior

It should launch

Screenshots 🖼️

No response

IDE

Visual Studio 2022

Operating system

No response

Version

No response

Device

No response

ReactiveUI Version

No response

Additional information ℹ️

No response

[glennawatson]

Need details of the exception

[laolarou726]

Need details of the exception

[volkmnv]

I'm getting the same exception in an Avalonia project after updating.

System.MissingMethodException
  HResult=0x80131513
  Message=Method not found: 'Splat.IMutableDependencyResolver Splat.Locator.get_CurrentMutable()'.
  Source=Avalonia.ReactiveUI
  StackTrace:
   at Avalonia.ReactiveUI.AppBuilderExtensions.<>c.<UseReactiveUI>b__0_1()
   at Splat.InternalLocator.RegisterResolverCallbackChanged(Action callback) in c:\temp\releaser\splat\src\Splat.Core\ServiceLocation\InternalLocator.cs:line 106
   at Splat.AppLocator.RegisterResolverCallbackChanged(Action callback) in c:\temp\releaser\splat\src\Splat.Core\ServiceLocation\AppLocator.cs:line 73
   at Splat.Locator.RegisterResolverCallbackChanged(Action callback) in c:\temp\releaser\splat\src\Splat\ServiceLocation\Locator.cs:line 64
   at Avalonia.ReactiveUI.AppBuilderExtensions.<>c.<UseReactiveUI>b__0_0(AppBuilder _)
   at Avalonia.AppBuilder.SetupUnsafe()
   at Avalonia.AppBuilder.Setup()
   at Avalonia.AppBuilder.SetupWithLifetime(IApplicationLifetime lifetime)
   at ...

[glennawatson]

With Avalonia, it's likely an out of date reference to Splat then in Avalonia. Been some changes lately.

Avalonia is getting us to take over the project, there will be a official ReactiveUI.Avalonia project soon, we pretty much got most of it going, just waiting on the Avalonia team to give us the last ok on it.

[volkmnv]

Just noticed that it is Avalonia.ReactiveUI and not ReactiveUI.Avalonia. Thanks for the heads-up.
Here is the the bug report in the Avalonia repository: AvaloniaUI/Avalonia#19601