Fatal error: Uncaught Error: Class 'Sabre\DAV\FSExt\Directory' not found in /home/malert/WebDAV/vendor/sabre/dav/lib/DAVACL/FS/Collection.php:18 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/lib/DAVACL/FS/Collection.php on line 18