Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/messenger/EventListener/DispatchPcntlSignalListener.php:20 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/messenger/EventListener/DispatchPcntlSignalListener.php on line 20