WooCommerce Setup Wizard has no countries available for selection

I have installed WordPress both using IIS and Apache on a Windows 11 dev machine that is not public. I have used

PHP7.4, MySQL 5.7, WordPress 6.1.1, Avada Core 5.9.2 and WooCommerce 7.4.

Everything is installed on both environments and the Avada and WooCommerce plugins are installed. I can see a default web page.

If I click on WooCommerce settings, I can see the countries in the Dashboard, but WooCommerce wants to to use the Setup Wizard, and the wizard loads.

In step 1, Store Details, the Country/Region select has no options. If I F12, I can see in the console admin.php shows an uncaught error in promise, and the code is ‘invalid_json’, and the message is ‘The response is not a valid JSON response’. I might be wrong, but I suspect this is the countries list.

There are a few threads on here where this has been fixed but I cannot find an actual solution.

The behavior is the same on both IIS and Apache.