Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in D:\Application\www\CPDB\vendor\symfony\http-kernel\EventListener\DisallowRobotsIndexingListener.php:23 Stack trace: #0 {main} thrown in D:\Application\www\CPDB\vendor\symfony\http-kernel\EventListener\DisallowRobotsIndexingListener.php on line 23