DAV error in Nextcloud 10.0.01

Hi I have a NAS in an Odroid XU4. I use Open Media Vault 3.0 (Debian jessie).

I have intalled succesfully Nextcloud 10.0.0.1 stable, to share some files from my office to home. I use Nginx for my server.

The client connects like a charm to the server, but after few seconds the connection is cancelled.

Here the log of the error:

Fatal webdav Exception: {“Message”:“HTTP/1.1 503 Could not open file”,“Exception”:“Sabre\DAV\Exception\ServiceUnavailable”,“Code”:0,“Trace”:"#0 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/3rdparty/sabre/dav/lib/DAV/CorePlugin.php(83): OCA\DAV\Connector\Sabre\File->get()\n#1 [internal function]: Sabre\DAV\CorePlugin->httpGet(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))\n#2 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/3rdparty/sabre/event/lib/EventEmitterTrait.php(105): call_user_func_array(Array, Array)\n#3 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/3rdparty/sabre/dav/lib/DAV/Server.php(459): Sabre\Event\EventEmitter->emit(‘method:GET’, Array)\n#4 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/3rdparty/sabre/dav/lib/DAV/Server.php(248): Sabre\DAV\Server->invokeMethod(Object(Sabre\HTTP\Request), Object(Sabre\HTTP\Response))\n#5 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/apps/dav/appinfo/v1/webdav.php(60): Sabre\DAV\Server->exec()\n#6 /media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/remote.php(165): require_once(’/media/db75e0b1…’)\n#7 {main}",“File”:"/media/db75e0b1-b05a-4038-acf5-8b570602b0c1/www/minube/apps/dav/lib/Connector/Sabre/File.php",“Line”:307,“User”:“admin”}

I would apreciate any suggestion.

Thanks in advance.

Do you have more errors in your webserver logfile? And did you use the nginx-configuration example from the documentation: https://docs.nextcloud.com/server/10/admin_manual/installation/nginx_nextcloud_9x.html?highlight=nginx