Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in /home/mohamed/education.mohamed-emad.com/database/seeders/DemoSuperAdminSeeder.php:9 Stack trace: #0 {main} thrown in /home/mohamed/education.mohamed-emad.com/database/seeders/DemoSuperAdminSeeder.php on line 9