Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php:28 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php on line 28