Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Loader\FileLoader" not found in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\symfony\translation\Loader\PhpFileLoader.php:19 Stack trace: #0 {main} thrown in C:\Users\Administrator\Desktop\xamp\htdocs\sdk\symfony\translation\Loader\PhpFileLoader.php on line 19