I recently installed Nextcloud AIO on an Ubuntu 22.04.2 server and am having an issue where whenever I try to open any office document (such as a .odt file), it gives an error message: Document loading failed, Failed to load Nextcloud Office - please try again later. I looked around and tried to troubleshoot this, first trying some of the steps described in this page. Whenever I went into the shell of the mastercontainer and tried running curl -vvv https://$NC_DOMAIN:443/hosting/discovery, I got a simple Could not resolve host error. Then I tried commenting out a host that had the IP address 127.0.1.1, which I saw from an earlier post here was causing problems. However, restarting the mastercontainer did not change anything after this.