Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in /home/devmecseminars/public_html/mec/vendor/symfony/http-kernel/EventListener/TranslatorListener.php:32 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/http-kernel/EventListener/TranslatorListener.php on line 32