Fatal error: Uncaught Error: Class "Symfony\Component\Security\Core\Authorization\ExpressionLanguage" not found in /home/ldt/public_html/canvas/udoit/vendor/sensio/framework-extra-bundle/src/Security/ExpressionLanguage.php:21 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/sensio/framework-extra-bundle/src/Security/ExpressionLanguage.php on line 21