"An unknown error occurred" when trying to sign in to iMessage on mac mini
I signed out of an old apple id on this mac and wanted to sign into a new one. It was successful. Now I want to change the apple id on my iMessage app and i'm getting this error "An unknown error occurred"
The password is exactly the one I sign in with. I have made sure. I have been able to log into my apple account online.
Mac mini, macOS 11.2