Why doesn't my TOC book show its one topic?
The Responsive HTML5 version that I committed via GIT and deployed to our app via Team City will not open a topic correctly from the Table of Contents. The book doesn't open the one topic that's inside it:

Clicking the Teams book should expand to show its single topic called "Teams" - as shown on my local machine:

This makes me suspect that a glitch occurred in the commit-deployment process, which is always possible, though this has never happened in 3 years' time. Am I on the right troubleshooting path? Appreciate any advice.
