Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Loader\FileLoader" not found in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Loader\YamlFileLoader.php:40 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Loader\YamlFileLoader.php on line 40