Fatal error: Uncaught Error: Class 'Illuminate\Database\Migrations\Migration' not found in /opt/lampp/htdocs/Insurance-Integration/database/migrations/2024_12_19_142853_add_field_refund_tanggal_efektif_to_kepesertaan.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/Insurance-Integration/database/migrations/2024_12_19_142853_add_field_refund_tanggal_efektif_to_kepesertaan.php on line 7