Brenden, that was my first suspicion as well, but I receive the error when loading their deployed site from my workstation even when incognito/inprivate.
P.S. I did select
Empty Cache and Hard Reload on my workstation, but it does not resolve the error. To clarify, I do receive the error when accessing their deployed site from a web browser but not when running the solution from localhost or from an Azure App Services Web App.