Help with Drum machine

So, my drum machine code has passed 7 out of 8 tests. I’m having a problem with test 5. What I’ve realized is that my html audio element returns a promise. I’ve tried several ways handling the promise but my test still fails. I don’t know what I’m doing wrong. I also get a DOM exception saying “ was interrupted by new load request.” Kindly help on this issue.Thanks. Below is the link to my codepen.