Fatal error: Uncaught Error: Class 'Sabre\DAV\Exception\Conflict' not found in /home/malert/WebDAV/vendor/sabre/dav/lib/DAVACL/Exception/AceConflict.php:15 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/lib/DAVACL/Exception/AceConflict.php on line 15