Getting Started Guide: tundra_gamesystems-dotsruntimebuildconfiguration_hbk.dag... Exception

I have made a project in Unity 2020.1.17f
Exactly according to the instructions: Preview 0.32- DOTS Runtime & Project Tiny: Getting Started

Section
Setting up a New Project

When building I get the following error message:

Build <a instanceID="21710">DotsRuntimeBuildConfiguration</a> failed after 7.45s.

[             ] Require frontend run.  tundra_gamesystems-dotsruntimebuildconfiguration_hbk.dag no longer valid. FileSignature timestamp changed: settings/gamesystems-dotsruntimebuildconfiguration.json

*** buildprogram build success (0.09 seconds), 0 items updated, 13 evaluated

Found old settings file 'C:/Users/jenss/Desktop/TinyDemo/Library/DotsRuntimeBuild/settings/gamesystems-dotsruntimebuildconfiguration.json', removing...

[       3s] Executed build program. Created build graph with 205 nodes.

tundra: error: unable to map gamesystems-dotsruntimebuildconfiguration to any named node or input/output file

[           0s] Freezing tundra_gamesystems-dotsruntimebuildconfiguration_hbk.dag.json into .dag (.dag file didn't exist)



UnityEngine.Debug:LogError(Object, Object)

Unity.Build.ResultBase:LogResult() (at Library/PackageCache/com.unity.platforms@0.10.0-preview.10/Editor/Unity.Build/ResultBase.cs:65)

Unity.Build.Editor.<>c:<.cctor>b__34_0(BuildConfiguration) (at Library/PackageCache/com.unity.platforms@0.10.0-preview.10/Editor/Unity.Build.Editor/BuildConfigurationInspector.cs:42)

Unity.Build.Editor.<>c__DisplayClass30_0:<Build>b__1() (at Library/PackageCache/com.unity.platforms@0.10.0-preview.10/Editor/Unity.Build.Editor/BuildConfigurationInspector.cs:128)

UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)

This error has already been reported by another user
https://forum.unity.com/threads/error-on-build-project.965831/
The solution proposed by AbdulAlgharbi doesn't work either.

Does anyone know a solution to this problem?

Thanx