Can't push repo but can clone

So I have no idea what happened in the past 3 months on my server where I could push but now all of the sudden 3 months later I can’t and all I get is this for the error and a google search hasn’t helped at all.

X11 forwarding request failed on channel 0
remote: ========================================================================
remote: Gitlab::GitAccess::ForbiddenError
remote: ========================================================================
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

I see others have posted the same issue and some aren’t even answered and others have no solutions.

I can clone the repo but not push and even the edit button in the website doesn’t show anymore. Seems my admin login lost repo access and I have checked everything more than once, even gitlab-rake gitlab:check passed all checks.

Please can anyone help?

might be several reasons. but do you have several gitlab front-ends?

No I don’t. Even with the last update I still can’t push.

This probably needs someone to debug.

How about trying to use https if you ssh or vise versa?

Also, check gitlab tail to see if any error?

How about using other accounts?

Did you upgrade recently - maybe that could related to your issue too.

Oh, maybe also check git repo if your disk space is full.