Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass" not found in T:\Xampp\htdocs\notice\vendor\symfony\http-kernel\DependencyInjection\MergeExtensionConfigurationPass.php:22 Stack trace: #0 {main} thrown in T:\Xampp\htdocs\notice\vendor\symfony\http-kernel\DependencyInjection\MergeExtensionConfigurationPass.php on line 22