Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in /var/www/html/invoice-backendNEWNEWOLD/database/seeds/PlansSeeder.php:6 Stack trace: #0 {main} thrown in /var/www/html/invoice-backendNEWNEWOLD/database/seeds/PlansSeeder.php on line 6