Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\Loader' not found in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Config/Loader/PhpFileLoader.php:38 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/contao/core-bundle/src/Config/Loader/PhpFileLoader.php on line 38