As a result we get the error Uncaught (in promise) Cannot select worker because no workers registered when trying to call Enigma to give us the richest millionaire
Take a look at the following post, as the symptom that you report seems to be the same:
And this issue that was resolved with the very same symptoms:
Let us know if you find hints in the above links to resolve your issue, or if not, reply back and tag @adi in your reply, who authored the post you mention and may have additional insights.