Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/fortebku/smtp-mail/database/migrations/2026_04_30_160000_add_premium_feature_flags_to_plans.php:35 Stack trace: #0 {main} thrown in /home/fortebku/smtp-mail/database/migrations/2026_04_30_160000_add_premium_feature_flags_to_plans.php on line 35