You can see that a new api folder has been added to the laravel project

This folder is used for the api interface for external development

The path under the api folder is

api\V1\UserController.php

And when defining routes in routes.php

$api = app('api.router');
$api->version('v1', function ($api) {
    $api->get('users/{id}', 'Api\V1\UserController@show');  
});

The class of this Api\V1\UserController cannot be found

Where do I need to configure the Api namespace? Because the api directory is not registered in laravel at all

Where to configure?