Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in D:\programs\xampp\htdocs\backend-test\database\seeders\AddDefaultProfileSettingToUserSeeder.php:10 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\database\seeders\AddDefaultProfileSettingToUserSeeder.php on line 10