Fatal error: Uncaught Error: Class "Illuminate\Database\Seeder" not found in /home/flighto/e-commerce2/packages/Webkul/Core/src/Database/Seeders/ChannelTableSeeder.php:8 Stack trace: #0 {main} thrown in /home/flighto/e-commerce2/packages/Webkul/Core/src/Database/Seeders/ChannelTableSeeder.php on line 8