synthesizer demo does not work

[zeus07]

Running the latest version of EdgeTPU on a Raspberry PI.

When I run synthesizer.py, I see the skeleton overlay but no sound is output regardless of movement. I can verify that Fluidsynth works with sample midi files. After some debugging, it appears the lines

            left = pose.keypoints.get('left wrist')
            right = pose.keypoints.get('right wrist')

don't return anything as the script never gets beyond the continue statement on the following line.

[hjonnala]

@zeus07 can you please share the command executed and the complete log from the terminal. Thanks!

[zeus07]

I cloned this repo and ran python3 synthesizer.py. Attached is a capture of the terminal.

debug.txt