```csharp
[runtime] 2022-06-06 09:24:31 [verbose]: Host execution state changed to
Stopping
[runtime] 2022-06-06 09:24:31 [error]: An unhandled error has occurred.
[runtime] 2022-06-06 09:24:31 [error]: System.NullReferenceException:
Object reference not set to an instance of an object.
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Game.Skinning.Editor.SkinEditorOverlay.setTarget(OsuScreen target)
in
/Users/dean/Projects/osu/osu.Game/Skinning/Editor/SkinEditorOverlay.cs:line
173
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Threading.ScheduledDelegate.RunTaskInternal()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Threading.Scheduler.Update()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Graphics.Drawable.UpdateSubTree()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
[runtime] 2022-06-06 09:24:31 [error]: at
osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
```