Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventDispatcherInterface" not found in /var/www/html/app/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php:31
Stack trace:
#0 {main}
thrown in /var/www/html/app/vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php on line 31