Official LangGraph API Server Image cannot support Generative UI

[AeoRu5]

Target Image: https://hub.docker.com/r/langchain/langgraphjs-api
The official image encounters the following error when processing requests with a command:
{ "error": "EmptyInputError", "message": "Received empty Command input" }
The root cause lies in the dynamically generated first argument of the graph.streamEvents call: kwargs.command != null ? getLangGraphCommand(kwargs.command) : (kwargs.input ?? null). Although the execution enters the getLangGraphCommand function, it fails to retrieve the correct output. This issue might be caused by the API service being started with Python instead of JavaScript. Hoping for a fix.
Here's the translated request example:
curl --location 'http://localhost:8123/threads/096e0078-39bb-44f7-beb1-03589b7b09d9/runs/stream' \ --header 'Content-Type: application/json' \ --data '{ "input": {}, "command": { "update": { "messages": [ { "type": "tool", "tool_call_id": "call_0_8d22cf0c-787f-4c7f-88bb-61cad1796a6d", "id": "do-not-render-c5827f4d-a871-489c-adb5-10ae5b51635e", "name": "book-accommodation", "content": "{\"accommodation\":{\"id\":\"aaf7f591-eb93-42a7-9c91-fc3f52931da4\",\"name\":\"9412 Garnet Key\",\"price\":953,\"rating\":4.67,\"city\":\"New York\",\"image\":\"https://a0.muscache.com/im/pictures/prohost-api/Hosting-50345540/original/f8e911bb-8021-4edd-aca4-913d6f41fc6f.jpeg?im_w=720&im_format=avif\"},\"tripDetails\":{\"startDate\":\"2025-05-01T10:12:39.173Z\",\"endDate\":\"2025-05-08T10:12:39.173Z\",\"numberOfGuests\":2,\"location\":\"New York\"}}" }, { "type": "human", "content": "Booked 9412 Garnet Key for 2." } ] }, "goto": "generalInput" }, "stream_mode": [ "messages-tuple", "values", "custom" ], "assistant_id": "agent", "checkpoint": { "checkpoint_id": "1f010743-568d-6980-8002-1e5f10a22362", "checkpoint_ns": "" }, "on_disconnect": "cancel" }'