Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in C:\xampp\htdocs\cloudpro.vip\database\seeders\AffiliateCodeForExistingUserSeeder.php:9 Stack trace: #0 {main} thrown in C:\xampp\htdocs\cloudpro.vip\database\seeders\AffiliateCodeForExistingUserSeeder.php on line 9