What is the error in the script?

I can not understand where is the error?
setInterval(function() {
 if(document.getElementById('id').innerHTML !='No offers')
 new Audio ('audio.mp3').play()
}, 1000);

Need if there's no text "no Offers", to play a melody.

Here fiddl, the melody is played constantly, does not see the conditions.
July 8th 19 at 15:30

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