git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
! [remote rejected] feature/ui-improvements -> feature/ui-improvements (Internal Server Error)
Edit: One minute after posting this it's working again.
After attempt #4 at 1706 Europe/Helsinki, git push worked. So just keep trying.
Edit: As of 10:04am I was able to push