Module routing 403

I find it hard to understand the documentation. Once I have created a module, installed it I created a menu item (good). It does not go in second position as it should:

```
public function handle(Event $event)
{
// Add new menu item
$event->menu->add([
'route' => ['black-box.index', []],
'title' => "Orari",
'icon' => 'fas fa-stopwatch',
'order' => 2,
]);
}
```

Then I go in Routes/portal.php and I created this:

```
Route::group([
'prefix' => 'portal',
'middleware' => 'portal',
'namespace' => 'Modules\BlackBox\Http\Controllers',
], function () {
Route::get('black-box', function () {dd('here');})->name('black-box.index');
});
```

If I visit myapp.test/portal/black-box it shows 403 error

I don't see how to delete this discussion. The routing is handled, the menu order not. :(
Sorry