Error 500 when deleting a repository from API

Description of the problem

Describe what you were doing right before the issue occurred.

I'm trying to develop a nice little utility to handle git services on command line, which is on https://gitlab.com/guyzmo/git-repo. As I'm developing it, I've had to fork and delete a repository multiple times in a row.

Though, at some point, I started to get 500 errors on most of the pages when I'm logged in.

Which Group/Project (with full path) is experiencing the issue?

last time, it was guyzmo/github3-py, which is a fork of sigmavirus24/github3-py, which I forked and deleted multiple times.

Approximate date/time when the error occurred.

today, this afternoon.