Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\laragon\www\saas-app\database\migrations\2026_04_11_101600_make_in_app_notifications_user_id_nullable.php:7 Stack trace: #0 {main} thrown in C:\laragon\www\saas-app\database\migrations\2026_04_11_101600_make_in_app_notifications_user_id_nullable.php on line 7