Cannot install package using composer

[Livideakoto]

I tried to install package using composer in my Laravel Application.
I'm using Laravel 8

Here is the output

composer require spatie/laravel-stripe-webhooks
Info from https://repo.packagist.org: #StandWithUkraine
Using version ^2.6 for spatie/laravel-stripe-webhooks
./composer.json has been updated
Running composer update spatie/laravel-stripe-webhooks
Loading composer repositories with package information
Updating dependencies
Info from https://repo.packagist.org: #StandWithUkraine
Lock file operations: 2 installs, 0 updates, 0 removals
  - Locking spatie/laravel-stripe-webhooks (2.6.2)
  - Locking spatie/laravel-webhook-client (2.8.0)
Writing lock file
Installing dependencies from lock file (including require-dev)
Nothing to install, update or remove
Generating optimized autoload files
Class App\Models\Message located in ./app/Http/Controllers/Message.php does not comply with psr-4 autoloading standard. Skipping.
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi

   Error 

  Call to undefined method Illuminate\Foundation\Application::scoped()

  at vendor/spatie/laravel-webhook-client/src/WebhookClientServiceProvider.php:30
     26▕         }
     27▕ 
     28▕         Route::macro('webhooks', fn (string $url, string $name = 'default') => Route::post($url, '\Spatie\WebhookClient\WebhookController')->name("webhook-client-{$name}"));
     29▕ 
  ➜  30▕         $this->app->scoped(WebhookConfigRepository::class, function () {
     31▕             $configRepository = new WebhookConfigRepository();
     32▕ 
     33▕             collect(config('webhook-client.configs'))
     34▕                 ->map(fn (array $config) => new WebhookConfig($config))

      +7 vendor frames 
  8   [internal]:0
      Illuminate\Foundation\Application::Illuminate\Foundation\{closure}(Object(Spatie\WebhookClient\WebhookClientServiceProvider))

      +5 vendor frames 
  14  artisan:37
      Illuminate\Foundation\Console\Kernel::handle(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
Script @php artisan package:discover --ansi handling the post-autoload-dump event returned with error code 1

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

[Livideakoto]

Can anyone give me help about what is wrong?