Fatal error: Uncaught Error: Class "Illuminate\Mail\Transport\Transport" not found in D:\Application\www\Training\vendor\laravel\framework\src\Illuminate\Mail\Transport\SparkPostTransport.php:8 Stack trace: #0 {main} thrown in D:\Application\www\Training\vendor\laravel\framework\src\Illuminate\Mail\Transport\SparkPostTransport.php on line 8