Fatal error: Uncaught Error: Class 'Sabre\DAV\Auth\Backend\AbstractDigest' not found in /home/malert/WebDAV/vendor/sabre/dav/lib/DAV/Auth/Backend/PDO.php:12 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/lib/DAV/Auth/Backend/PDO.php on line 12