Fatal error: Uncaught Error: Class "Symfony\Component\Security\Http\Firewall" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/EventListener/FirewallListener.php:26 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/EventListener/FirewallListener.php on line 26