Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Extension\ExtensionInterface" not found in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Extension/Extension.php:27 Stack trace: #0 {main} thrown in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Extension/Extension.php on line 27