Why doesn't audio play when clicked?

Question

JavaScript

The mechanism of work is as follows: each pressed button has a data-tile attribute. For example, let's take data-tile = 3. When the button is clicked, sound src="3.mp3" is inserted into the html and the sound should play. But it does not play, although the file, in my opinion, is connected correctly. Example https://codesandbox.io/s/billowing-lake-3gcen?file...

Main app.vue file