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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 still can't fix it!
Just found my diff error... I pulled a sneaky on myself.
I got the same error when I miscalculated previous rank.
If a user ranked 1 completes an activity ranked -1 they will receive 1 progress.