I’m having ‘error unknown’ and ‘nextcoud server not found’ issues.
/var/log/nextcloud/nextcloud.log
...
{"reqId":"lN1KWqYSrBxc7YXnl2Yh","level":3,"time":"2024-08-23T09:00:11+00:00","remoteAddr":"","user":"--","app":"PHP","method":"","url":"--","message":"Trying to access array offset on null at /var/www/nextcloud/apps/richdocuments/lib/Service/CachedRequestService.php#146","userAgent":"--","version":"29.0.4.1","data":{"app":"PHP"}}