Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Definition\ConfigurationInterface" not found in C:\laragon\www\sfomantic\vendor\symfony\framework-bundle\DependencyInjection\Configuration.php:56 Stack trace: #0 {main} thrown in C:\laragon\www\sfomantic\vendor\symfony\framework-bundle\DependencyInjection\Configuration.php on line 56