Build a chatbot to query your documentation using Langchain and Azure OpenAI

I am getting this error message when trying to pose question. Any idea what is causing it.

c:/Users/anstephe/dev/app_chatbot.py
you: what is azure function?

Traceback (most recent call last):
File "c:\Users\anstephe\dev\app_chatbot.py", line 90, in <module>
chat_history = ask_question_with_context(qa, query, chat_history)
 File "C:\Users\anstephe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\openai\api_requestor.py", line 298, in request
resp, got_stream = self._interpret_response(result, stream)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\anstephe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\openai\api_requestor.py", line 700, in _interpret_response
self._interpret_response_line(
File "C:\Users\anstephe\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.11_qbz5n2kfra8p0\LocalCache\local-packages\Python311\site-packages\openai\api_requestor.py", line 765, in _interpret_response_line
raise self.handle_error_response(
openai.error.InvalidRequestError: Resource not found