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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.
Make a research online with this error.
Because it's not available in the current CW's Node version.
Marked as resolved, since this is not a suggestion for the kata at all.