Compiler Error with "Creator Kit: RPG"

Hey,
im new to Unity. I solved the Essentials Pathway and want to go on with the “Get Started with the Creator Kit: RPG”:

[ Creator Kit: RPG | Tutorials | Unity Asset Store](http:// Creator Kit: RPG | Tutorials | Unity Asset Store)

I followed the first steps to set up my unity project but when i import the asset i get compiler errors, which i am not able to understand or to solve.

Compiler Errors:

Assets\Creator Kit - RPG\Scripts\Tiles\Isometric Rule Tile\Editor\IsometricRuleTileEditor.cs(8,26): error CS0433: The type ‘IsometricRuleTile’ exists in both ‘Assembly-CSharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null’ and ‘Unity.2D.Tilemap.Extras, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null’
Assets\Creator Kit - RPG\Scripts\Tiles\Isometric Rule Tile\Editor\IsometricRuleTileEditor.cs(19,32): error CS0115: ‘IsometricRuleTileEditor.RuleMatrixOnGUI(RuleTile, Rect, RuleTile.TilingRule)’: no suitable method found to override
Assets\Creator Kit - RPG\Scripts\Tiles\Isometric Rule Tile\Editor\IsometricRuleTileEditor.cs(72,32): error CS0507: ‘IsometricRuleTileEditor.ContainsMousePosition(Rect)’: cannot change access modifiers when overriding ‘public’ inherited member ‘RuleTileEditor.ContainsMousePosition(Rect)’

I added an example picture of the errors in the c# script, if you need more → let me know

Do i have to download/install/add more librarys or anything else to my unity environment?
Is anyone having same issues?
Does anyone know how to fix?

I already tried to set the editor version to the same one, which the project/asset has…

THANK YOU

The error in the file is german, but it matches with the first error in my text…

Hey, so this error is saying that the class IsometricRuleTile exists in your project, but also in Unity.2D.Tilemap.Extras
So, it doesn’t know where to get the definition from.
If you back up your project and then delete the IsometricRuleTile.cs file in your project that might fix the problem.

If that doesn’t fix the problem, you could edit the namespace inside IsometricRuleTile.cs on your project and change it to something like namespace CreatorKit and give that a try instead.

Hello, when I did it the following error appeared:
Assets\Creator Kit - RPG\Scripts\Tiles\Isometric Rule Tile\Editor\IsometricRuleTileEditor.cs(81,1): error CS1022: Type or namespace definition, or end-of-file expected

Appreciate your kind support