Error in Aspose.HTML

I use Aspose.HTML v.18.6 trial version .net Framework 2.0 on web server windows 2003 R2. I get Object reference not set to an instance of an object error message
when run renderer.Render(device, _document);
device,renderer and _document is not null.Can I use v.18.6 on this server?

@slavaziz

Thank you for contacting support.

Aspose APIs support the platform you are working with. Please upgrade to Aspose.HTML for .NET 18.7 in your environment and then share your kind feedback with us. In case the issue persists, please share a narrowed down sample application reproducing this problem - along with respective source files, if any, so that we may investigate further to help you out.