Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventDispatcherInterface' not found in /usr/local/httpd/vhtdocs/hotello/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php:19 Stack trace: #0 {main} thrown in /usr/local/httpd/vhtdocs/hotello/vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php on line 19