Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/alterna/private_assets.alternalab.it/database/migrations/2021_09_20_183216_change_default_label_to_nullable.php:8 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/database/migrations/2021_09_20_183216_change_default_label_to_nullable.php on line 8