Can't solve this issue on episode 38 - Register a new user.

[LicFuraca]

Fatal error: Uncaught Error: Call to a member function resolve() on null in C:\Users\marti\OneDrive\Documents\Programacion\Cursos\PHP\laracastMinni\Core\App.php:21 Stack trace: #0 C:\Users\marti\OneDrive\Documents\Programacion\Cursos\PHP\laracastMinni\controllers\registration\store.php(8): Core\App::resolve() #1 C:\Users\marti\OneDrive\Documents\Programacion\Cursos\PHP\laracastMinni\Core\Router.php(39): require('...') #2 C:\Users\marti\OneDrive\Documents\Programacion\Cursos\PHP\laracastMinni\public\index.php(26): Core\Router->route() #3 {main} thrown in C:\Users\marti\OneDrive\Documents\Programacion\Cursos\PHP\laracastMinni\Core\App.php on line 21

I don't undersand what's going on.
Can someone help me?