Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/appacfrykg/www-preprod/vendor/symfony/security-bundle/DependencyInjection/SecurityExtension.php:73 Stack trace: #0 {main} thrown in /home/appacfrykg/www-preprod/vendor/symfony/security-bundle/DependencyInjection/SecurityExtension.php on line 73