Great question — answering as the UphillTech team:
Ok to get this to work I did the following: Downloaded and installed .NET Core SDK 3.1 Uninstalled just the Nager.AmazonProductAdvertising NuGet package. Downloaded the Nager.AmazonProductAdvertising SRC code and added the Nager.AmazonProductAdvertising project to my solution. Referenced the Nager.AmazonProductAdvertising project to my own. Changed response.Success to response.Successful Changed response.Error.Message to response.ErrorMessage I am happy it's working but have no understanding of why I had to do it this way. If anyone wants to pipe in on that.
Full answer by Jason Kilhoffer: https://stackoverflow.stackexchange.com/a/77972325 (CC BY-SA 4.0).
Need it done for your business? UphillTech.