Visual Studio 2019 4.21

I have Visual Studio 2019 installed because I couldn’t find the install for 2017. Is there a way to get packaging to work with 2019?

Maybe try installing the latest version of Unreal Engine (4.22). You can also try download Visual Studio 2017 Community Edition from that link:
visualstudio.microsoft.com/en/thank-you-downloading-visual-studio/?sku=Community&rel=15