For the week 1 lab, the final cell has both pictures black. My grade is 100% so this must be a lesson implementation problem or something else. I am using Firefox and haven’t had a problem with any of the jupter notebook visuals to date.
can you share a screenshot of the code cell output in question?
Hi,
I had the same issue a few minutes ago. However, after reloading the notebook and running all cells again, everything worked fine and the two pictures are not black anymore 
.
Best Domi
PS: It was about the following cell block:
It’s great, Domi!
Raymond