Notice: Undefined variable: app in E:\xampp\htdocs\api.astka\src\routes.php on line 22

Fatal error: Uncaught Error: Call to a member function post() on null in E:\xampp\htdocs\api.astka\src\routes.php:22 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.astka\src\routes.php on line 22