Fatal error: Uncaught Error: Class "Symfony\Component\Config\Loader\FileLoader" not found in C:\Apache24_x64\htdocs\vak_old\vendor\symfony\routing\Loader\YamlFileLoader.php:27 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\vak_old\vendor\symfony\routing\Loader\YamlFileLoader.php on line 27