Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\RequestEvent" not found in /home/demodh/leads.demo.diana.com.bd/vendor/symfony/http-kernel/Event/ExceptionEvent.php:30 Stack trace: #0 {main} thrown in /home/demodh/leads.demo.diana.com.bd/vendor/symfony/http-kernel/Event/ExceptionEvent.php on line 30