How to use subdomain in Laravel?

Question

Laravel

Tell me how to correctly implement subdomains in Laravel, I did it according to the manual , but on both subdomains it gives out the same old pages (welcome view).
Here is the route code

Route::domain('admin.'. env('APP_DOMAIN'))->group(function()
{
        return 'My admin domain';
});

Route::get('/', function () {return view('welcome');});

Answer 1

The group is not a route in itself, you need to create separate routes inside it