When trying to add a view in Visual Studio on .NET Core, I'm getting the following error after scaffolding... generating code:

There was an error running the selected code generator: the specified bootstrap version '3' is not valid. The valid options are '4, 5'.

I am not sure why I'm getting this error and the only reference to Bootstrap 3 I see is in Westwind.Globalization's resource files. I checked the latest version of that and it still contains Bootstrap 3 so I'm thinking that isn't the issue.

This just started happening and I'm not sure what changed to cause it.