Fatal error: Uncaught Error: Class "Doctrine\Common\EventManager" not found in /home/ntpcbgtpp/public_html/mat1/vendor/symfony/doctrine-bridge/ContainerAwareEventManager.php:24 Stack trace: #0 {main} thrown in /home/ntpcbgtpp/public_html/mat1/vendor/symfony/doctrine-bridge/ContainerAwareEventManager.php on line 24