Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\Loader" not found in /home/u6668910/public_html/test/lab/vendor/symfony/assetic-bundle/Routing/AsseticLoader.php:38 Stack trace: #0 {main} thrown in /home/u6668910/public_html/test/lab/vendor/symfony/assetic-bundle/Routing/AsseticLoader.php on line 38