Network graph does not works on gitlab.com - AJAX request returns 500

Before this issue I merged one branch to another with fast-forward.

Changed title: Network graph not works on gitlab.com - AJAX request returns 500 → Network graph does not works on gitlab.com - AJAX request returns 500

Added frontend ~12980 feature proposal reply by email labels

Added repository reproduced on GitLab.com and removed feature proposal reply by email labels

A duplicate was posted at #21128 (closed), I'm going to close this in favour of that issue as it has other links that will help debug.

Thanks for reporting this @atnartur!

Status changed to closed