Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in D:\Apache24\www\xyx_mes\back\backstage-of-xinyaxuan-mes\database\seeders\MenuSeeder.php:9 Stack trace: #0 {main} thrown in D:\Apache24\www\xyx_mes\back\backstage-of-xinyaxuan-mes\database\seeders\MenuSeeder.php on line 9