Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in C:\xampp\htdocs\database\migrations\2024_07_23_153202_add_poll_expiry.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\database\migrations\2024_07_23_153202_add_poll_expiry.php on line 21