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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.
In what language is it programmed? Show your code to be able to check it.
Most likely, "dsafdsest" is taken as a variable or constant and you haven't declared it.