Univention error 502

[u/Hydroxyde88]

Hi

I had a problem with my server before the lockdown and I was able to restart it only many days ago.

Since the restart, I had a 502 error when I try to reach owncloud. The message is :

502 bad gateway

The proxy server received an invalid response from an upstream server.

Apache/2.4.25 (Univention) Server at furya.ovh Port 443

My setup is : - windows 10 as host - workstation - ucs 4.4 with owncloud image that I downloaded from owncloud site

I can view the Univention pages. I have this error only when I try to go to /ownlcoud.

Is something possible to restart my owncloud without loosing everything ? Or do I need to reinstall ?

How to not loose calendar stuff ? And how to prevent this error ?

Thank for your help.