Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Exception\InvalidArgumentException" not found in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php:19 Stack trace: #0 {main} thrown in /home/mboption/public_html/forums/vendor/symfony/dependency-injection/Symfony/Component/DependencyInjection/Exception/ServiceNotFoundException.php on line 19