Fatal error: Uncaught Error: Interface "Sabre\Xml\Element" not found in /home/tzuovhm/tzuovhm/3rdparty_/sabre/dav/lib/DAVACL/Xml/Property/Acl.php:30 Stack trace: #0 {main} thrown in /home/tzuovhm/tzuovhm/3rdparty_/sabre/dav/lib/DAVACL/Xml/Property/Acl.php on line 30