Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\addfirst\database\migrations\2026_05_29_120000_add_promotion_duration_pricing.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\addfirst\database\migrations\2026_05_29_120000_add_promotion_duration_pricing.php on line 7