Thank you for the suggestion. We created the sample project to demonstrate our approach to error handling in SAM setup, see https://medium.com/2pax/fe0e10808732. However, it may indeed be interesting to add a web app as well to show how this would be deployed as a "complete" stack.
For the time being, I added a note to the project readme to clarify the scope of the repo.
For the time being, I added a note to the project readme to clarify the scope of the repo.