Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2019_04_06_205355_add_setting_allow_user_skin.php:7 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2019_04_06_205355_add_setting_allow_user_skin.php on line 7