Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2015_06_15_183253_move_email_to_username.php:6 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2015_06_15_183253_move_email_to_username.php on line 6