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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.
It's a site issue, you should raise the issue at https://github.com/Codewars/codewars.com/issues instead ;-)
There seems to be some issue with browser server communication:
I emptied the test and code areas, I added some unambiguously correct code (JS) and all the time get same error when trying to run sample tests:
Test Results:
Missing language
Server Execution Error:
Missing language
Request Error:
Request failed with status code 422
This error was caused due to an issue processing the web request, not because of an issue executing your code. You can retry the request.
really cool answer, although it requires knowing maths rather than coding
but it works within the parameters set by this exercise