Notice: Undefined variable: loader in D:\xampp\htdocs\erp_api\vendor\symfony\routing\Symfony\Component\Routing\Tests\Fixtures\validresource.php on line 5

Fatal error: Uncaught Error: Call to a member function import() on null in D:\xampp\htdocs\erp_api\vendor\symfony\routing\Symfony\Component\Routing\Tests\Fixtures\validresource.php:5 Stack trace: #0 {main} thrown in D:\xampp\htdocs\erp_api\vendor\symfony\routing\Symfony\Component\Routing\Tests\Fixtures\validresource.php on line 5