Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\DelegatingLoader" not found in /var/www/crm_killing_ninja/vendor/symfony/framework-bundle/Routing/DelegatingLoader.php:29 Stack trace: #0 {main} thrown in /var/www/crm_killing_ninja/vendor/symfony/framework-bundle/Routing/DelegatingLoader.php on line 29