Drum Machine Doesnt Pass The Tests

I couldnt make it to pass the test.If you can help i really apreciate .
https://rizikolik.github.io/JSDrumMachine/
github:

What test? Can you tell more about it?

sorry .number 5 and 6 tests. If you go to the page you will see.

Got it. By clicking on the snippet it brings you to the GitHub repository page

Sorry.The upper link is for deployed version.