Fatal error: Uncaught Error: Interface "Sabre\CalDAV\ICalendarObject" not found in /var/www/cal.digio.space/vendor/sabre/dav/lib/CalDAV/Schedule/ISchedulingObject.php:13 Stack trace: #0 {main} thrown in /var/www/cal.digio.space/vendor/sabre/dav/lib/CalDAV/Schedule/ISchedulingObject.php on line 13