Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Loader\LoaderInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\routing\Loader\AnnotationClassLoader.php:73 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\routing\Loader\AnnotationClassLoader.php on line 73