BUG in 09-langchain-streaming.ipynb calling /chat with GET instead of POST

[birdperson1970]

learn/generation/langchain/handbook/09-langchain-streaming/09-langchain-streaming.ipynb

Calling the /chat endpoint with a GET resulting in a 405 error. Should be POST.

res = requests.post("http://localhost:8000/chat", json={"text": "hello there!"} )