Fatal error: Uncaught Error: Class "Symfony\Component\Translation\Loader\FileLoader" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\translation\Loader\PhpFileLoader.php:19 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\translation\Loader\PhpFileLoader.php on line 19