Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/custom/public_html/katiekarr/vendor/symfony/http-kernel/EventListener/FragmentListener.php:34 Stack trace: #0 {main} thrown in /home/custom/public_html/katiekarr/vendor/symfony/http-kernel/EventListener/FragmentListener.php on line 34