Fatal error: Uncaught Error: Class 'Sabre\HTTP\Response' not found in /home/malert/WebDAV/vendor/sabre/dav/tests/Sabre/HTTP/ResponseMock.php:14 Stack trace: #0 {main} thrown in /home/malert/WebDAV/vendor/sabre/dav/tests/Sabre/HTTP/ResponseMock.php on line 14