Is the Sensei API autotag endpoint working?

(Not sure if this is the right place for this)

I'm trying to get results from the autotag endpoint (https://sensei.adobe.io/functions/image/autotag), and all I can manage to get back is "{"error":{}}".

I know I am authenticated correctly, as I've been able to get results from the autocrop endpoint (https://sensei.adobe.io/functions/image/autocrop) with the same set up.

My request body is structured like so:

{

     "image": {

          "uri":"https:\/\/www.example.com"

     },

     "results":"10",

     "confidence":"0.5"

}

And my headers are:

"Content-Type: application/json",

"X-Api-Key: <API_KEY>",

"Authorization: Bearer  <ACCESS_TOKEN>",

Any help is greatly appreciated.