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.
Me neither but I'm glad it's working for you now. The kata hasn't been changed a bit so most likely it was an issue with the platform.
I don't see any problems with the kata. I just copied and pasted the code you showed character to character and it passes all the tests with flying colors.