WoW classic Player Class API issue

I’m trying to get the class media using interface given on the documentation (

If you go down to Playable Class Media and click try it (obviously with your client id & secret), it gives back the following response:

  "_links": {
    "self": {
      "href": ""
  "assets": [
      "key": "icon",
      "value": ""

That part works, but if you copy/paste the value (classicon_warrior.jpg), it fails to give an image back. I tried that link with my token and that didn’t work either.

Am I doing something wrong?