Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in /home/kartulirest/public_html/kartulirest.de/database/migrations/2026_05_18_160000_add_campaign_time_slots.php:7 Stack trace: #0 {main} thrown in /home/kartulirest/public_html/kartulirest.de/database/migrations/2026_05_18_160000_add_campaign_time_slots.php on line 7