Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in /usr/local/httpd/vhtdocs/hotello/vendor/symfony/event-dispatcher/GenericEvent.php:26 Stack trace: #0 {main} thrown in /usr/local/httpd/vhtdocs/hotello/vendor/symfony/event-dispatcher/GenericEvent.php on line 26