Fatal error: Uncaught Error: Class "Sabre\Event\EventEmitter" not found in /server/www/10.1.1.5/htdocs/vendor/sabre/http/lib/Client.php:46 Stack trace: #0 {main} thrown in /server/www/10.1.1.5/htdocs/vendor/sabre/http/lib/Client.php on line 46