Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in D:\programs\xampp\htdocs\backend-test\vendor\laravel\telescope\workbench\database\seeders\DatabaseSeeder.php:9 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\vendor\laravel\telescope\workbench\database\seeders\DatabaseSeeder.php on line 9