Reverse proxy with Android client does not work

I have set up nextcloud with reverse proxy.
I can access it at the website address on all my devices (pc, ipad and android phone).
I can also access my nextcloud server with the application on iOS, but then I try to connect to the server with the android application, I can’t access the server. (the application does not find the server)

I am running nextcloud as a docker (from LSIO) on unRAID. Running nextcloud 10 stable
I am running Nginx-letsencrypt as a docker on unRAID as reverse proxy.

I have used this guide to set it up:

I can’t speak for your setup, but I have nc running through an Apache proxy to an LXD container with no issue. Do your nginx logs show anything?

This is the only thing it says in the access.log - - [18/Sep/2016:17:06:20 +0200] “GET /nextcloud/status.php HTTP/1.1” 404 27 “-” "Mozilla/5.0 (Android) ownCloud-android/1.3.0" - - [18/Sep/2016:17:06:20 +0200] “GET /nextcloud/status.php HTTP/1.1” 301 185 “-” "Mozilla/5.0 (Android) ownCloud-android/1.3.0" - - [18/Sep/2016:17:06:20 +0200] “GET /nextcloud/status.php HTTP/1.1” 404 27 “-” “Mozilla/5.0 (Android) ownCloud-android/1.3.0”

In the error.log this is what is says:
2016/09/18 17:07:31 [error] 95#95: *530 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, client:, server:, request: "GET /nextcloud/status.php HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: ""

Another one with the same problem here.

@LukasReschke maybe you can help? I can’t nginx.

Did you ever find a solution to your problem?

I find myself with a similar setup on FreeNAS with

  • a Nextcloud jail according to this how-to, just using Nextcloud instead of Owncloud and
  • an nginx reverse-proxy jail (setup), redirecting remote users to Nextcloud