We have the same error.
Maybe it has something todo with the office app? In the systemlogs i see:
Could not detect any host in DOMAIN/lool/convert-to/png → Didnt collabora change lool to cool? So why does the app try to reach lool?
Full ERROR Logs
{"reqId":"jJdd81HiODW9fhAvNUFY","level":3,"time":"2022-08-25T20:06:38+02:00","remoteAddr":"IPADRESS","user":"USERNAME","app":"richdocuments","method":"GET","url":"/apps/richdocuments/index?fileId=275678&requesttoken=%2B9osbC0EiecEL8dlOBHU4ujp6hmowpPIHOeQfEtVYmo%3D%3Az5VJCVdUvY9KHbNddWWiitGRknjwkPeOLtChMS8UFT0%3D&path=%2FNeue%20Tabelle.ods","message":"Could not find urlsrc in WOPI","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0","version":"24.0.4.1","exception":{"Exception":"Exception","Message":"Could not find urlsrc in WOPI","Code":0,"Trace":[{"file":"/var/www/nextcloud/apps/richdocuments/lib/TokenManager.php","line":226,"function":"getUrlSrc","class":"OCA\\Richdocuments\\WOPI\\Parser","type":"->"},{"file":"/var/www/nextcloud/apps/richdocuments/lib/Controller/DocumentController.php","line":174,"function":"getToken","class":"OCA\\Richdocuments\\TokenManager","type":"->","args":["*** sensitive parameters replaced ***"]},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":225,"function":"index","class":"OCA\\Richdocuments\\Controller\\DocumentController","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":133,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/AppFramework/App.php","line":172,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->"},{"file":"/var/www/nextcloud/lib/private/Route/Router.php","line":298,"function":"main","class":"OC\\AppFramework\\App","type":"::"},{"file":"/var/www/nextcloud/lib/base.php","line":1023,"function":"match","class":"OC\\Route\\Router","type":"->"},{"file":"/var/www/nextcloud/index.php","line":36,"function":"handleRequest","class":"OC","type":"::"}],"File":"/var/www/nextcloud/apps/richdocuments/lib/WOPI/Parser.php","Line":59,"CustomMessage":"--"},"id":"6307ba61bc095"}
and
{"reqId":"fqQfyjnMm1EfQ3T4jFVQ","level":2,"time":"2022-08-25T20:00:41+02:00","remoteAddr":"IPADRESS","user":"USERNAME","app":"no app in context","method":"GET","url":"/core/preview?fileId=357697&c=fc6ad67d2e0a9d53439a267df7704b9d&x=313&y=313&forceIcon=0&a=0","message":"Could not detect any host in XXXX/lool/convert-to/png","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0","version":"24.0.4.1","data":[],"id":"6307ba61bc281"}