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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.
Do the following: save your code locally (or you will lose it), select the latest Python version (3.8) at the top page of the trainer window, click on
resetat the bottom. That will fix the issue.