Is https://api.d-id.com/talks/streams down? I'm getting 500 errors

Even with CURL, I get a server error:

curl --request POST \
>      --url https://api.d-id.com/talks/streams \
>      --header 'accept: application/json' \
>      --header 'authorization: Basic <my-api-key>' \
>      --header 'content-type: application/json' \
>      --data '
> {
>   "config": {
>     "stitch": true
>   },
>   "source_url": "<https://xxxMyImage.png>",
>   "driver_url": "bank://subtle/"
> }
> '
{"kind":"UnknownError","description":"Internal Server Error"}