Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\KernelEvent" not found in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/http-kernel/Event/ControllerArgumentsEvent.php:29 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/myhospitalnow/suitecrm/vendor/symfony/http-kernel/Event/ControllerArgumentsEvent.php on line 29