I am doing the fast.ai v2 course on deep learning and on deploying my first app (as suggested in chapter 2 of the book, I am using viola on top of the jupyter notebook to make it run without showing the cells, therefore act as an app. When I run it on binder it gives the following error.
The related github (therefore the codes) is here and you can open the binder by clicking the logo in the readme. I would be grateful for your help