Fatal error: Uncaught Error: Interface 'Sabre\DAV\PartialUpdate\IPatchSupport' not found in /home/malert/WebDAV/vendor/sabre/dav/tests/Sabre/DAV/PartialUpdate/FileMock.php:7 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/tests/Sabre/DAV/PartialUpdate/FileMock.php on line 7