Fatal error: Uncaught Error: Class 'Sabre\DAV\Exception' not found in /home/malert/WebDAV/vendor/sabre/dav/lib/DAV/Exception/ServiceUnavailable.php:17 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/lib/DAV/Exception/ServiceUnavailable.php on line 17