Fatal error: Uncaught Error: Class "Illuminate\Notifications\Notification" not found in /home/karendei/public_html/test.karenderia.ir/app/Notifications/CourseNotification.php:11 Stack trace: #0 {main} thrown in /home/karendei/public_html/test.karenderia.ir/app/Notifications/CourseNotification.php on line 11