Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2018_07_05_215440_add_unique_serial_option_to_settings.php:7 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2018_07_05_215440_add_unique_serial_option_to_settings.php on line 7