Notice: Undefined variable: app in E:\xampp\htdocs\api.blank_fe_delete\src\middleware.php on line 6

Fatal error: Uncaught Error: Call to a member function add() on null in E:\xampp\htdocs\api.blank_fe_delete\src\middleware.php:6 Stack trace: #0 {main} thrown in E:\xampp\htdocs\api.blank_fe_delete\src\middleware.php on line 6