Fatal error: Uncaught Error: Interface 'Symfony\Component\Routing\Exception\ExceptionInterface' not found in D:\xampp\htdocs\psp\backend\vendor\symfony\routing\Exception\MethodNotAllowedException.php:21 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\symfony\routing\Exception\MethodNotAllowedException.php on line 21