Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2016_12_27_212631_make_asset_assigned_to_polymorphic.php:9 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2016_12_27_212631_make_asset_assigned_to_polymorphic.php on line 9