Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in /var/www/html/tmp/contrib/devel/src/EventSubscriber/ErrorHandlerSubscriber.php:13 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/devel/src/EventSubscriber/ErrorHandlerSubscriber.php on line 13