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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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All test passed but still get error
non_object_property_loa...operty 'length' of null
I too have the same error. If we are given the test arrays that fail we might be able to better decode the issue.
Why do i get an "Oups" error?