[Standard Talks API] Uploaded image falls back to Alice sample + 500 Internal Server Error

Dear D-ID Support Team,

We are experiencing an issue with the Standard Talks API where an uploaded image is always replaced by the internal “alice.jpg” sample and the /talks endpoint returns a 500 Internal Server Error.

Steps to reproduce:

GUI (web console) accepts the same image and generates correctly.
API via POST /images → returns image_id “img_WABlh9s7UDXv3UbI6gRNW”.
API via POST /talks with that image_id always falls back to alice.jpg and returns 500:
HTTP/1.1 500 Internal Server Error
{ "kind":"UnknownError", "description":"Internal Server Error" }
Environment:

API Key (Basic auth): YWlfaXJAZ2xhZC1jdWJlLmNvbQ:PRLnxvpg-y-m_YCp_kBhN
Image file: avator1.jpg
image_id: img_WABlh9s7UDXv3UbI6gRNW
talk_id: tlk_VHKvlTvEykNue6oF_pmTz
The same image works fine via GUI, producing a “done” status and downloadable video.
Please investigate the API logs and advise on a resolution.

Thank you for your assistance.

Best regards,
[kousuke kashiwai [email protected]]