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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.
It is a question, not an issue.
It is a bit difficult here: the input string has a correct version number (4.44) so there is no error. The description has to be read with attention.
You could (have) read posts below about that.
Cheers.