Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in C:\xampp\htdocs\tacforce.pro\laravel-app\database\seeders\DemoSeeder.php:28 Stack trace: #0 {main} thrown in C:\xampp\htdocs\tacforce.pro\laravel-app\database\seeders\DemoSeeder.php on line 28