Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\Loader' not found in /home/aucoeurdgw/dev/src/PrestaShopBundle/Routing/YamlModuleLoader.php:36 Stack trace: #0 {main} thrown in /home/aucoeurdgw/dev/src/PrestaShopBundle/Routing/YamlModuleLoader.php on line 36