Perhaps indentation?

General advice:

1. Get the parameters of the failed test. AFAIK every programming language here at CodeWars has some way to print something.
2. Get your result.
3. Re-read the kata's description. There are a lot of issues where the user missed something in the description.
4. Check your result manually (if possible). There are quite a few issues where the user's result was just wrong.
5. If you ask for help
   • Consider asking on the Gitter channel. You might get an aswer in a much more timely manner.
   • State your programming language and version as shown at the top of the page.
   • State the parameters of the failed test, your result and the expected result (if available).
   • Add your solution code surrounded by lines with three backticks (```) and mark the comment as "having spoiler content".
   • Label the comment as "Question".