Trouble Using with Local by Flywheel

I’m trying Local by Flywheel for local development. I want to develop sites locally, turn them into static sites, then deploy on S3 or Netlify.

I’ve created static sites with Simply Static using remotely hosted sites no problem. But I’m having trouble generating static sites from my locally hosted site.

When I use Simply Static on my local site, the resulting .zip only includes:
1. index.html
2. wp-includes/js/wp-emoji-release.min.js

In the Simply Static settings I’ve included the local folder that holds my wordpress site data in the “Additional Files and Directories” field.

I’ve tried
1. C:\Users\Tom\Local Sites\thomasjcoffeycom\app\
2. C:\Users\Tom\Local Sites\thomasjcoffeycom\

When using “Additional Files and Directories” I get the same result (only two files in the zip).

The error log has many errors of the type “Additional Dir” with details “An error occurred: Attempted to fetch a remote URL”

Any ideas on how I can convert this local site to a static site?