Fatal error: Uncaught Error: Class "Osp\Base\OspStub" not found in C:\xampp\htdocs\updatejd\src\vipapis\product\ChannelProductService.php:21 Stack trace: #0 C:\xampp\htdocs\updatejd\src\vipapis\product\ChannelProductServiceHelper.php(12): require_once() #1 {main} thrown in C:\xampp\htdocs\updatejd\src\vipapis\product\ChannelProductService.php on line 21