Anyone else getting these blank errors with timestamps? This is happening in 2021.3.3f1 and the other 2021 versions; here I just created a new project and these errors appear and they won’t go away.
Extra unwanted packages in new projects (collab, testing, rider and other junk):
About the fastest way I have found to make a project and avoid all this noise is to create the project, then as soon as you see the files appear, FORCE-STOP (hard-kill) Unity (with the Activity Manager or Task Manager), then go hand-edit the Packages/manifest.json file as outlined in the above post, then reopen Unity.
Sometimes the package system gets borked from all this unnecessary churn and requires the package cache to be cleared:
I also have been having this issue on 2021.3.2f1 and the solutions I can find also are unable to fix it due to them being outdated as you said. I have also posted a thread about this https://discussions.unity.com/t/880991 and posted my logs there. I suspect we are having the same bug/problem.