Controller in for sub-directory

Hello!

I try create controller in sub-directory, but get 404 error.
I just follow documentation https://codeigniter4.github.io/CodeIgnit...irectories and create folder "one" and file in folder "Hello.php":

PHP Code:

<?php namespace App\Controllers;

class Hello extends BaseController
{

    public function method()
    {
        echo 'success';
    }
} 


App/Controllers/one/hello/method

Codeigniter has been installed in sub-directory site.com/backend
Now i try call controller by link site.com/backend/one/hello/method and i get 404 error - "Controller or its method is not found: App\Controllers\One::hello".

How to create controller files correctly in sub-diectory?

Thank you!