Fatal error: Uncaught Error: Class 'Sabre\VObject\Component' not found in /home/malert/WebDAV/vendor/sabre/vobject/lib/Component/VAvailability.php:18 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/vobject/lib/Component/VAvailability.php on line 18