Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in /home/rccglwuq/events.disio.com.ng/vendor/welp/mailchimp-bundle/src/Event/SubscriberEvent.php:11 Stack trace: #0 {main} thrown in /home/rccglwuq/events.disio.com.ng/vendor/welp/mailchimp-bundle/src/Event/SubscriberEvent.php on line 11