Has anybody gotten LangServe API working?

[adhishthite]

Hello!

I have a RAG Pipeline that I have exposed via LangServe. I am using LangServe v0.2.
I have added the LangServe model as per the documentation. Here's my .env.local:

{
    "id":"temp-v0.0.1",
    "name": "tempgpt",
    "displayName":"TempGPT",
    "endpoints" : [{
        "type": "langserve",
        "url" : "http://127.0.0.1:8000/tempgpt",
    }]
},

However, when I select this model from the picker and send a request, I get this on the LangServe server.

- "POST /tempgpt/stream HTTP/1.1" 422 Unprocessable Entity

and I see this on the ChatUI:

What am I missing?

cc @nsarrazin