Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\exam\database\migrations\2025_01_01_000020_create_exams.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\exam\database\migrations\2025_01_01_000020_create_exams.php on line 7