Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\Tests\Fixtures\ExtensionPresentBundle\DependencyInjection\ExtensionPresentExtension.php:17 Stack trace: #0 {main} thrown in D:\Application\www\E-Tracking\vendor\symfony\http-kernel\Tests\Fixtures\ExtensionPresentBundle\DependencyInjection\ExtensionPresentExtension.php on line 17