Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2014_11_20_203007_add_username_to_user.php:6 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2014_11_20_203007_add_username_to_user.php on line 6