[ERROR] Class "Modules\Blog\Providers\BlogServiceProvider" not found (ok)

https://www.tutsmake.com/laravel-module-example/

C:\xampp82\htdocs\lva4\composer.json

"autoload": {
    "psr-4": {
      "App\\": "app/",
      "Database\\Factories\\": "database/factories/",
      "Database\\Seeders\\": "database/seeders/",
      "Modules\\": "Modules/"
    }
  }

composer dump-autoload

Class 'Modules\Blog\Providers\BlogServiceProvider' not found · Issue #1283 · nWidart/laravel-modulesGitHub