Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home1/aihika/public_html/gate-manager/vendor/symfony/mailer/EventListener/EnvelopeListener.php:25 Stack trace: #0 {main} thrown in /home1/aihika/public_html/gate-manager/vendor/symfony/mailer/EventListener/EnvelopeListener.php on line 25