Error when using collabora

Hello,

I get this error at the Webserver log when I open an document…

FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream

Docker log:

wsd-00027-00035 13:03:12.133296 [ websrv_poll ] WRN  WOPI host did not pass optional access_token_ttl| wsd/FileServer.cpp:471

What is wrong?

System:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.4 LTS
Release: 16.04
Codename: xenial

nginx version: nginx/1.13.8

PHP 7.2