Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /opt/lampp/htdocs/myhospitalnow/mhn-file-management-ms/vendor/symfony/mailer/EventListener/EnvelopeListener.php:24 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/mhn-file-management-ms/vendor/symfony/mailer/EventListener/EnvelopeListener.php on line 24