I am seeing an intermittent error where the kraken/chat/emoticon_images endpoint is returning error 410:
HTTP status code 410 for uri https://api.twitch.tv/kraken/chat/emoticon_images Body: {"error":"Gone","status":410,"message":"v3 is a lie but v5 is still alive. See https://dev.twitch.tv/docs"}
As far as I can tell this endpoint IS v5 (and there is no New Twitch API option for this endpoint):
As far as I can tell I am using Accept: application/vnd.twitchtv.v5+json in the header. I will try to capture the next time that it happens for more detail.