Error in Plotting: FileNotFoundError: [Errno 2] No such file or directory: 'dvipng': 'dvipng'

[ChristophSchranz]

Hi,

I've got an error while plotting a tour in AEC.03 - Solving the TSP with GAs.ipynb int the cell with the content plot_tour(tour):

FileNotFoundError: [Errno 2] No such file or directory: 'dvipng': 'dvipng'

It came out, installing dvipng solved the problem. Maybe an installation hint would be useful?

sudo apt-get install dvipng

Best and thanks for these great courses 👍