Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Most probably modifying the input, and not realizing this. Anyway, no issue with the kata.
I have the exact same issue, using jupyter notebook.