I’m not able to reproduce this error. It’s a brand new course and we’re fixing issues as we find them. If you’re using Chrome, can you please try this exercise again and paste the output form the developer console log
I have the same problem, If I use the ‘View Solution’ option and save the results the webpage allows me to do the following exercise! the big deal here is that it doesn’t matter if I continue with other activities, the same problem was present.