Package Manager for ProBuilder is unusable for version 2021.1

I just installed the ProBuilder package into my unity project and i get this error:

Error log encase the image is hard to read:

If I remove the ProBuilder package all the errors go away.

Things I have tried:

  1. I went to my project’s library folder and deleted the package cache folder.
  2. I went to preferences and regenerated all my project files.

I still have this error - its completely unusable as my project won’t compile.

How do I fix this ?

Hey, I’m sorry to see you are having this issue. Unfortunately I was not able to reproduce in a project I created in 2021.1.6f1. Could you submit a bug, so we could have more information, like the specific Unity version, the Operative System, and also a demo project where the issue is present: maybe the problem comes from the interaction with other packages. Thanks in advance.