Fatal error: Uncaught Error: Class "Sabre\DAV\Xml\XmlTest" not found in /var/www/illumine/vendor/sabre/dav/tests/Sabre/DAV/Xml/Property/HrefTest.php:9 Stack trace: #0 {main} thrown in /var/www/illumine/vendor/sabre/dav/tests/Sabre/DAV/Xml/Property/HrefTest.php on line 9