Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/console/Event/ConsoleEvent.php:24 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/mhn-hospital-ms/vendorback/symfony/console/Event/ConsoleEvent.php on line 24