Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Loader\Loader' not found in /home/devilinf/maitres-couvreurs.fr/web_pool/marne-vitry-le-francois/vendor/oneup/uploader-bundle/src/Routing/RouteLoader.php:11 Stack trace: #0 {main} thrown in /home/devilinf/maitres-couvreurs.fr/web_pool/marne-vitry-le-francois/vendor/oneup/uploader-bundle/src/Routing/RouteLoader.php on line 11