Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in C:\xampp\htdocs\rampcheckv3\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rampcheckv3\vendor\symfony\http-kernel\DependencyInjection\ConfigurableExtension.php on line 28