Name:Unknown
Clan:northcoders
Member Since:Apr 2019
Last Seen:Nov 2022
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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.
I'm unable to see your full code, so I can't replicate the problem. However, based on the error message, it looks like you're mutating the input. Try to avoid doing that and see if the error persists.