Call to undefined method App\Models\CourseContent\Course::label() when calling MenuItem::resource

[connecteev]

I am trying to customize the left navigation menu in Nova, according to the docs here https://nova.laravel.com/docs/customization/menus.html

However, the following code:

use Illuminate\Http\Request;
use Laravel\Nova\Dashboards\Main;
use Laravel\Nova\Menu\Menu;
use Laravel\Nova\Menu\MenuItem;
use Laravel\Nova\Menu\MenuSection;

class NovaServiceProvider extends NovaApplicationServiceProvider
{
    public function boot()
    {
        parent::boot();

        Nova::mainMenu(function (Request $request) {
            return [
                MenuSection::dashboard(Main::class)->icon('chart-bar'),
                MenuSection::make('Courses', [
                    MenuItem::resource(Course::class),
                    MenuItem::resource(CourseSection::class),
                ])->icon('document-text')->collapsable(),
            ];
        });

results in a 500 server error, with the following message in the laravel logs:

[2023-09-02 00:34:12] local.ERROR: Call to undefined method App\Models\CourseContent\Course::label() {"userId":1,"exception":"[object] (BadMethodCallException(code: 0): Call to undefined method App\\Models\\CourseContent\\Course::label() at /Users/connecteev/Code/web/__Herd/kb_int/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php:67)
[stacktrace]
#0 /Users/connecteev/Code/web/__Herd/kb_int/vendor/laravel/framework/src/Illuminate/Support/Traits/ForwardsCalls.php(36): Illuminate\\Database\\Eloquent\\Model::throwBadMethodCallException('label')
#1 /Users/connecteev/Code/web/__Herd/kb_int/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(2333): Illuminate\\Database\\Eloquent\\Model->forwardCallTo(Object(Illuminate\\Database\\Eloquent\\Builder), 'label', Array)
#2 /Users/connecteev/Code/web/__Herd/kb_int/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Model.php(2345): Illuminate\\Database\\Eloquent\\Model->__call('label', Array)
#3 /Users/connecteev/Code/web/__Herd/kb_int/_LOCAL_PACKAGES/laravel_nova_package/src/Menu/MenuItem.php(109): Illuminate\\Database\\Eloquent\\Model::__callStatic('label', Array)
#4 /Users/connecteev/Code/web/__Herd/kb_int/app/Providers/NovaServiceProvider.php(36): Laravel\\Nova\\Menu\\MenuItem::resource('App\\\\Models\\\\Cour...')
#5 [internal function]: App\\Providers\\NovaServiceProvider->App\\Providers\\{closure}(Object(Illuminate\\Http\\Request), Object(Laravel\\Nova\\Menu\\Menu))
#6 /Users/connecteev/Code/web/__Herd/kb_int/_LOCAL_PACKAGES/laravel_nova_package/src/Nova.php(1190): call_user_func(Object(Closure), Object(Illuminate\\Http\\Request), Object(Laravel\\Nova\\Menu\\Menu))
#7 /Users/connecteev/Code/web/__Herd/kb_int/_LOCAL_PACKAGES/laravel_nova_package/src/Nova.php(1043): Laravel\\Nova\\Nova::resolveMainMenu(Object(Illuminate\\Http\\Request))

Adding a function label() to the Course Resource Class in /app/Nova/Course.php did not help:

<?php

namespace App\Nova;

use Illuminate\Http\Request;
use Laravel\Nova\Fields\Boolean;
use Laravel\Nova\Fields\ID;
use Laravel\Nova\Fields\Text;
use Laravel\Nova\Fields\Trix;
use Laravel\Nova\Http\Requests\NovaRequest;

class Course extends Resource
{
...
...
...
    public static function label()
    {
        return 'Courses'; // Customize the label as needed
    }

Any idea what's going on?

[connecteev]

User error. In my NovaServiceProvider I was importing:

use App\Models\Course;
use App\Models\CourseSection;

Instead of:

use App\Nova\Course;
use App\Nova\CourseSection;