Error while installing package about nova-unlayer-field

[felloz]

I use composer require and get this error:

@php artisan package:discover --ansi

   Error

  Class 'Laravel\Nova\Nova' not found

  at E:\Laravel\unlayer-laravel\vendor\idf\nova-unlayer-field\src\ServiceProvider.php:13
     9| {
    10|     /** @inheritDoc */
    11|     public function boot(): void
    12|     {
  > 13|         Nova::serving(function () {
    14|             Nova::script('nova-unlayer-field', __DIR__.'/../dist/js/field.js');
    15|         });
    16|
    17|         $this->publishes([

  1   E:\Laravel\unlayer-laravel\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:37
      IDF\NovaUnlayerField\ServiceProvider::boot()

  2   E:\Laravel\unlayer-laravel\vendor\laravel\framework\src\Illuminate\Container\BoundMethod.php:37
      call_user_func_array([])
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

Installation failed, reverting ./composer.json to its original content.

[alies-dev]

Hello @felloz
You need to install Nova before installing this package

[felloz]

Laravel Nova its a payed package right?

[pawelmysior]

@felloz yes.