Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\ContainerInterface" not found in /home/ldt/public_html/canvas/udoit/vendor/symfony/dependency-injection/Container.php:48 Stack trace: #0 {main} thrown in /home/ldt/public_html/canvas/udoit/vendor/symfony/dependency-injection/Container.php on line 48