How can I get OwnCloud to work with Collabora? I set everything up according to https://central.owncloud.org/t/collabora-online-code-libreoffice-online-with-owncloud/1576 and just keep getting Format filter server is down or misconfigured. My nginx config is https://hastebin.com/hupitaduhi.nginx and I can verify I have the docker container running.