Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\FileLoader' not found in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Loader/FileLoader.php:30 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Loader/FileLoader.php on line 30