Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\IntrospectableContainerInterface" not found in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Container.php:63 Stack trace: #0 {main} thrown in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Container.php on line 63