Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in C:\xampp\htdocs\new_saas\backend\database\seeders\InitialUsersSeeder.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\new_saas\backend\database\seeders\InitialUsersSeeder.php on line 12