Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/DependencyInjection/SecurityExtension.php:56 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/DependencyInjection/SecurityExtension.php on line 56