Fatal error: Uncaught Error: Class "Sabre\CalDAV\CalendarObject" not found in /home/tzuovhm/tzuovhm/nextcloud/3rdparty/sabre/dav/lib/CalDAV/Schedule/SchedulingObject.php:17 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/nextcloud/3rdparty/sabre/dav/lib/CalDAV/Schedule/SchedulingObject.php on line 17