InvalidFileSizeError: file size exceeded 10 MB - the maximum size permitted for small files

Hi, I am facing this particular error for a fairly small size of the image, even the combined size of my image and audio or less than 2MB. Please tell me what I am doing wrong.

Here is the request that I am passing

endpoint = https://api.d-id.com/talks POST

{
    "source_url": "https://aftrfiles.s3.amazonaws.com/dbe01567-0903-443b-ac11-9cbfbd17307a.jpg",
    "script": {
        "type": "audio",
        "audio_url": "https://aftrfiles.s3.amazonaws.com/cloned_voice_678d139679ac2ff680470cba.mp3"
    },
    "config": {
        "stitch": true,
        "driver_expressions": {
      "expressions": [
        {
          "start_frame": 0,
          "expression": "happy",
          "intensity": 1
        }
      ]
    }
    }
}

Please answer this as soon as possible