Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/b2bwebnexxonro/digital-be/database/migrations/2025_05_15_105304_add_ai_agent_to_ai_threads.php:7 Stack trace: #0 {main} thrown in /home/b2bwebnexxonro/digital-be/database/migrations/2025_05_15_105304_add_ai_agent_to_ai_threads.php on line 7