Quiz item not configured - Tree Maps and Hash Maps

[srcatto]

For cc4e.com, in the discussions.
Lesson 11/13 - Tree Maps and Hash Maps
Tools:
Quiz: Tree Maps and Hash Maps
https://www.cc4e.com/lessons_launch/cc_05_quiz
Click on link,

Welcome Stephen Catto from C Programming for Everybody (Instructor)

This quiz has not yet been configured

The same quiz doesn't appear in the course 4 week 6 Coursera version.
https://www.coursera.org/learn/building-objects-in-c/home/week/6