error if model does not return a valid outline["description"]

[jhgoebbert]

Description

jupyter-ai fails if the model does not return a json-outline with a key=="description".
https://github.com/jupyterlab/jupyter-ai/blob/main/packages/jupyter-ai/jupyter_ai/chat_handlers/generate.py#L190

A check for outline["sections"] and outline["description"] could ensure that this is caught.

Backtrace

File “/lib/python3.10/site-packages/jupyter_ai/chat_handlers/[base.py](http://base.py/)”, line 38, in process_message
await self._process_message(message)
File “/lib/python3.10/site-packages/jupyter_ai/chat_handlers/[generate.py](http://generate.py/)”, line 241, in _process_message
await fill_outline(outline, llm=self.llm, verbose=True)
File “/lib/python3.10/site-packages/jupyter_ai/chat_handlers/[generate.py](http://generate.py/)”, line 190, in fill_outline
generate_code(section, outline[“description”], llm=llm, verbose=verbose)
KeyError: ‘description’

[jhgoebbert]

This are great news.