gpt4all does not generate notebook (using /generate)

[xhejtman]

Description

trying to generate an example notebook throws error:

Traceback (most recent call last):
  File "/opt/conda/lib/python3.11/site-packages/jupyter_ai/chat_handlers/base.py", line 125, in on_message
    await self.process_message(message)
  File "/opt/conda/lib/python3.11/site-packages/jupyter_ai/chat_handlers/generate.py", line 279, in process_message
    final_path = await self._generate_notebook(prompt=message.body)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/jupyter_ai/chat_handlers/generate.py", line 255, in _generate_notebook
    outline = await generate_outline(prompt, llm=self.llm, verbose=True)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/jupyter_ai/chat_handlers/generate.py", line 59, in generate_outline
    outline = parser.parse(outline)
              ^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/langchain_core/output_parsers/pydantic.py", line 64, in parse
    return super().parse(text)
           ^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/langchain_core/output_parsers/json.py", line 72, in parse
    return self.parse_result([Generation(text=text)])
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/langchain_core/output_parsers/pydantic.py", line 60, in parse_result
    json_object = super().parse_result(result)
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/conda/lib/python3.11/site-packages/langchain_core/output_parsers/json.py", line 69, in parse_result
    raise OutputParserException(msg, llm_output=text) from e
langchain_core.exceptions.OutputParserException: Invalid json output: The outline should be organized into sections with headings indicating their content. Each section should have at least one subsection.

clearly returing the text: The outline should be organized into sections with headings indicating their content. Each section should have at least one subsection. instead of JSON.

Using model: nous-hermes-llama2-13b.Q4_0.gguf

packages:

gpt4all                   2.6.0                    pypi_0    pypi
langchain                 0.1.20                   pypi_0    pypi
langchain-community       0.0.38                   pypi_0    pypi
langchain-core            0.1.52                   pypi_0    pypi
langchain-openai          0.1.7                    pypi_0    pypi
langchain-text-splitters  0.0.2                    pypi_0    pypi
langsmith                 0.1.59                   pypi_0    pypi
jupyter-ai                2.15.0                   pypi_0    pypi
jupyter-ai-magics         2.15.0                   pypi_0    pypi
jupyterlab                4.0.7              pyhd8ed1ab_0    conda-forge

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