503 Error on Web Editor and various WebUI Features while Changes get applied

Hi there,
I deployed gitlab-ce (omnimus) on the latest Debian a while ago using the official documentation - Webfeatures like the Editor, Tags and stuff do raise errors like 503 - the changes get applied but the page itself times out.

Somehow i didn’t find anything helpful in the logs yet but maybe i looked wrong…

Would be amazing to get some help here. :slight_smile: