Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/fortebku/smtp-mail/database/migrations/2026_03_18_400000_expand_channel_integrations_for_third_party.php:8 Stack trace: #0 {main} thrown in /home/fortebku/smtp-mail/database/migrations/2026_03_18_400000_expand_channel_integrations_for_third_party.php on line 8