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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.
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Because it needs at least Node 15.0.0
no, your own ones. the ones you don't see match, its your own braces that don't. you can easily show this by removing your own code and running empty code. you can avoid adding unbalanced braces by inserting and removing them in pairs, and you can avoid writing more code than you're able to debug by running your code after each small change.
presumably your own braces don't match up