Mattermost plugin failure

I am trying to connect to documentserver via MM plugin.
The server is working inkl example) and is reacheable via registered domain.
When I am pointing in my plugin to https:// dcoumen.domain.net with correct Header, secret, and Prefix, I see an 500 internal error.
MM and OO are on the same server in different dockers. NGINX is providing the LE Certificates and pointing to the http: ports in both appl.
Any Hints?
Thank You

DOC

Hello @doc

Please share versions of used connector app, Document Server and Mattermost.
Also, please check mutual accessibility of both servers with wget <address>, execute from Document Server to Mattermost and vice versa.

By the way, do I understand that both apps are behind the NGINX proxy?

1 Like

(post deleted by author)

Thank you.
Both are behind nginx.
Nginx provides LE certificate for MM and points to localIp:8065.
Onlyoffice is in different container with portmapping 8199 to 80 and 7443 to 443.

Problem: nr 1
I have a Mattermost backup server Teams edition 192.168.0.171:8065.
Documentserver answers in Browser pointing to URL http:// 192.168.200.22:8199 perfectly.

When pointing to 192.168.200.22:8199 (onlyoffice) from Mattermost ( 192.168.0.171) the plugin works fine.

The second MM server, Professional licence, is located 192.168.200.22:8065
When pointing to http:// 192.168.200.22:8199 (onlyoffice) from Mattermost Prof Ed. (192.168.200.22) the plugin starts loading and gives 500 Error.

Problem n2

In nginx i simply point the domain as proxyhost to 192.168.200.22:8065 and everything works fine. Inkl. LE.

So it doesn’t in Onlyoffice.
The domain never connects to onlyoffice. I spent hours read your website OO behind nginx.
Nothing.

Ngingx is located by 192.168.200.22:81 and gets poots 81, 80 and 443.

Mattermost latest 10.9
Onlyoffice latest 9.
Plugin latest 1.2

Thanks for your help

meanwhile i am able to connect to my domain via http
and get the welcome page of OO.
But:
Plugin says:
This Plugin could not be started. [ONLYOFFICE CMD]: could not parse document server version

but only via
Server in http:
Https: not yet testable (too may tries to get certificate)

Thank You Klaus