Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventDispatcherInterface" not found in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/event-dispatcher/EventDispatcher.php:33 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/event-dispatcher/EventDispatcher.php on line 33