Fatal error: Uncaught Error: Class "Nelmio\SecurityBundle\EventListener\AbstractContentTypeRestrictableListener" not found in /home/ntpcbgtpp/public_html/mat1/vendor/nelmio/security-bundle/src/EventListener/ClickjackingListener.php:19 Stack trace: #0 {main} thrown in /home/ntpcbgtpp/public_html/mat1/vendor/nelmio/security-bundle/src/EventListener/ClickjackingListener.php on line 19