new Plastic SCM workspace giving warnings after checking in changes when a prefab is edited?

(my game is called “Multiplayer!”) hello! I recently converted all of my projects to the Plastic SCM workspace, upgrading them from collaborate. this went fine of course, and they were upgraded successfully. however, I checked in some changes I had made to my games scripts, after this, I went to edit the collider on a prefab, so I went into the prefab view and began changing the size of the prebabs collider. however, after every change I made, unity would give me this warning:

Cannot checkout files in Version Control: An existing checkout operation has locked the workspace ‘Multiplayer!’. Please wait for the checkout operation to finish.

does anyone know what is causing this?

I don’t know. I have the same.

I updated my Unity to 2021.3.0f1 and started receiving the same error. I do not know if Unity editor relates to this problem though.

At least you are not alone.

Any luck on this? I did the same thing and can’t update any prefabs now!
Edit: It seems going to package manager and upgrading the Unity Collaboration to 2.1.0-preview 6 seemed to fix the issues.