Fatal error: Uncaught Error: Interface "Symfony\Bundle\SecurityBundle\DependencyInjection\Security\Factory\AuthenticatorFactoryInterface" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/DependencyInjection/Security/Factory/CustomAuthenticatorFactory.php:23 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/security-bundle/DependencyInjection/Security/Factory/CustomAuthenticatorFactory.php on line 23