I have added the .idea files to my .gitignore file and that seems to work fine. Since my .idea files were tracked already, though, earlier posts have suggested the following code, to get them out from under version control.
git rm -rf .idea
or
git rm -r --cached .idea
In either case, though, I get the message:
fatal: pathspec '.idea' did not match any files.
When I list my files in this folder, though, .idea is right up top.
What am I doing wrong?