Cant access Gitlab

PROBLEM SOLVED! PLEASE CLOSE

Hello all,

since a few days i just cant access my GitLab anymore.
The request just goes into an timeout.
I use an own NGINX Server, and not the NGINX from GIt.

Nginx Config: https://hastebin.com/adapuleken.nginx
Gitlab.rb: https://hastebin.com/ajoqidogad.scala (Everything else is default)

The SSL Cert is okay, and the domain git.mydomain.tld is pointing to my Server.

Strange thing is:
If i restart git with gitlab-ctl restart, i can reach the Website, but it tells me 502 - Whoops, GitLab is taking too much time to respond. As soon as it is ready, the page is just loading, and loaing, and loading… - after a bit time, i tell me ERR_TOO_MANY_REDIRECTS - but i dont know, why and where it gets redirectet to often?

I dont know why it did not work, i just stopped working?
Does anyone have an Idea, or can someone help me?

Regards!
Manu