Fatal error: Uncaught Error: Class 'Illuminate\Database\Seeder' not found in /home/alkhabee/public_html/platform.alkhabeer.org/database/seeders/CourseSeeder.php:9 Stack trace: #0 {main} thrown in /home/alkhabee/public_html/platform.alkhabeer.org/database/seeders/CourseSeeder.php on line 9