Fatal error: Uncaught Error: Interface "Symfony\Component\Security\Core\Exception\ExceptionInterface" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-core/Exception/InvalidArgumentException.php:19 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-core/Exception/InvalidArgumentException.php on line 19