Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/fortebku/smtp-mail/database/migrations/2026_03_31_000005_add_content_hash_to_kb_documents.php:7 Stack trace: #0 {main} thrown in /home/fortebku/smtp-mail/database/migrations/2026_03_31_000005_add_content_hash_to_kb_documents.php on line 7