Thank you for the quick and informative reply.
Though I am still pretty confused as I am still learning; If I follow along with “Twitch Extensions Part 6 – Dev Environment Updates – Content Security Policy!” and modify my code to consider CSP headers then it will permit communication between the front end and back end?
Also, are any plans to update the Extension 101 tutorial series to reflect these changes? As of now, the tutorial does not work when reaching the backend section. It is a lot of information and jargon to process in order to understand the solution without examples in relation to the code to highlight the mechanics of what is going on. Though Extensions | Twitch Developers does sort of do a good job of explaining things the Extension 101 tutorial series should really mention this.