Fatal error: Uncaught Error: Class 'Symfony\Component\DependencyInjection\Container' not found in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/ContainerBuilder.php:52 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/ContainerBuilder.php on line 52