Fatal error: Uncaught Error: Class "Illuminate\Notifications\Notification" not found in C:\xampp\htdocs\vhost\demo.nexmall.biz\app\Notifications\Refund\Declined.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\vhost\demo.nexmall.biz\app\Notifications\Refund\Declined.php on line 12