Fatal error: Uncaught Error: Class "Illuminate\Notifications\Messages\SimpleMessage" not found in D:\Application\www\Training\vendor\laravel\framework\src\Illuminate\Notifications\Messages\MailMessage.php:5 Stack trace: #0 {main} thrown in D:\Application\www\Training\vendor\laravel\framework\src\Illuminate\Notifications\Messages\MailMessage.php on line 5