Can't check in files with no changes

[Ameliarate16]

My team has been using this plugin for a project but we've been having an issue where some files are checked out but the check in button is greyed out and there's no saved changes to submit. We tried manually unlocking the files in git bash but it said "git status failed: exited with code 128" which is the generic 'raised an error' code which was no help.