No disk space left on server, please contact the server administrator

Hi I’m Mobi,
I have installed Nextcloud and Collabora on a CentOS 7 System with Plesk
First time when I click on a document I get the error "No disk space left on server, please contact the server administrator. After trying it again the same document will be opend in Collabora (Collabora Online Development Edition (CODE) V4.

The server log is below.

Can someone help me

Greetings Mobi

2019-02-01 17:49:39 Warning 91.11.195.88 101 GET /lool/https%3A%2F%2Fwww.next.domain.de%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F13685_ocjswk19c9ap%3Faccess_token%3D4FmySyJRS0qr8w8gdC0Gi4eTO9Ita2hv%26access_token_ttl%3D0%26permission%3Dedit/ws?WOPISrc=https%3A%2F%2Fwww.next.domain.de%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F13685_ocjswk19c9ap&compat=/ws HTTP/1.1 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 840 SSL/TLS-Zugriff für nginx
2019-02-01 17:51:31 Error 178.254.28.182 404 GET /hosting/capabilities HTTP/1.1 GuzzleHttp/6.3.3 curl/7.29.0 PHP/7.2.14 162 SSL/TLS-Zugriff für nginx
2019-02-01 17:51:31 Error 178.254.28.182 404 GET /hosting/capabilities HTTP/1.1 GuzzleHttp/6.3.3 curl/7.29.0 PHP/7.2.14 162 SSL/TLS-Zugriff für nginx
2019-02-01 17:51:31 Error 178.254.28.182 404 GET /hosting/capabilities HTTP/1.1 GuzzleHttp/6.3.3 curl/7.29.0 PHP/7.2.14 162 SSL/TLS-Zugriff für nginx
2019-02-01 17:51:31 Error 178.254.28.182 14363#0: *24884 open() “/var/www/vhosts/domain.de/collabora.domain.de/hosting/capabilities” failed (2: No such file or directory) nginx-Fehler
2019-02-01 17:51:31 Error 178.254.28.182 14363#0: *24885 open() “/var/www/vhosts/domain.de/collabora.domain.de/hosting/capabilities” failed (2: No such file or directory) nginx-Fehler
2019-02-01 17:51:31 Error 178.254.28.182 14363#0: *24886 open() “/var/www/vhosts/domain.de/collabora.domain.de/hosting/capabilities” failed (2: No such file or directory) nginx-Fehler
2019-02-01 17:51:32 Access 91.11.195.88 200 POST /loleaflet/173510f/loleaflet.html?WOPISrc=https%3A%2F%2Fwww.next.domain.de%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F13685_ocjswk19c9ap&title=testpr%C3%A4sentation.odp&lang=de-DE&closebutton=1&revisionhistory=1 HTTP/2.0 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 4.96 K SSL/TLS-Zugriff für nginx
2019-02-01 17:51:32 Error 91.11.195.88 499 GET /loleaflet/173510f/images/lc_closedoc.svg HTTP/2.0 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 0 SSL/TLS-Zugriff für nginx
2019-02-01 17:51:33 Warning 91.11.195.88 101 GET /lool/https%3A%2F%2Fwww.next.domain.de%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F13685_ocjswk19c9ap%3Faccess_token%3DZ0E7IVcoz5NbKfk3iwx2WaAxs5fai3HR%26access_token_ttl%3D0%26permission%3Dedit/ws?WOPISrc=https%3A%2F%2Fwww.next.domain.de%2Findex.php%2Fapps%2Frichdocuments%2Fwopi%2Ffiles%2F13685_ocjswk19c9ap&compat=/ws HTTP/1.1 Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 840 SSL/TLS-Zugriff für nginx

Same problem here:

Collabora Online ist running inside docker container.