Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in C:\Apache24_x64\htdocs\ipad\vendor\symfony\http-kernel\Tests\Fixtures\ExtensionLoadedBundle\DependencyInjection\ExtensionLoadedExtension.php:17 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ipad\vendor\symfony\http-kernel\Tests\Fixtures\ExtensionLoadedBundle\DependencyInjection\ExtensionLoadedExtension.php on line 17