HTML5 Audio pool exhausted

So I have a website where you can hover on div and this starts to play a song. There are maaany of these divs there and I had a lot of bugs along the way, but I finally got to the point where the site is not that buggy. Actually, there is just one bug now. When I play a few songs by hovering over different divs and then I reload the page, it sometimes happens that the sound is not played until I clear cache or hard-refresh the page. The browser says: HTML5 Audio pool exhausted, returning potentially locked audio object.

Here is my code:

$(this).hover(
    function() {
        $("#spinner-loading-voice").css("display", "block");
        if (sound != null) {
            if (sound.playing()) {
                sound.stop();
                sound.unload();
            }
        }
        sound = new Howl({
            src: voice["mp3_local_path"],
            format: "mp3",
            html5: true,
            onload: function() {
                if (sound != null) {
                    if (!sound.playing()) {
                        sound.play();
                    } else {
                        sound.stop();
                        sound.unload();
                        sound.play();
                    }
                }
                $("#spinner-loading-voice").css("display", "none");
            },
            onplayerror: function() {
                sound.once('unlock', function() {
                    sound.play();
                });
            }
        });
    },
    function() {
        sound.unload();
        $("#spinner-loading-voice").css("display", "none");
    }
); 

For now, let’s ignore how messy the code is. My question is - can I somehow clear the Audio pool?