Hoa-renderer

I am trying https://github.com/GoogleChrome/omnitone/tree/master/examples/hoa-renderer.html
Downloaded:
resources
hoa-renderer.html
omnitone.min.js

The problem:
no trigger:
Omnitone.createBufferList(audioContext, exampleSoundPathList).then((results) => {
alert("Hallo 1")
});
trigger:
toaRenderer.initialize().then((results) => {
alert("Hallo 2")
});
trigger:
soaRenderer.initialize().then((results) => {
alert("Hallow 3")
Hallo 1 never trigger.

My exampleSoundPathList:
var exampleSoundPathList = [
'http://185.33.21.112:80/blues_128',
'http://servidor25.brlogic.com:8674/live'
];
Also:
var exampleSoundPathList = [
'http://185.33.21.112:80/blues_128',
];

I do not now what is wrong.