[Bug]: prompt_tune: TypeError: sequence item 0: expected str instance, bool found

[youyuanrsq]

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• [X] I have searched the existing issues and this bug is not already filed.
• [X] My model is hosted on OpenAI or Azure. If not, please look at the "model providers" issue and don't file a new one here.
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Describe the bug

When I used the CLI command python -m graphrag.prompt_tune --root ./ragtest --output prompts --config ./ragtest/settings.yaml to generate prompts, I encountered this bug. After checking, the error code is located in graphrag/prompt_tune/generator/entity_relationship.py:

if entity_types:
    entity_types_str = (
        entity_types if isinstance(entity_types, str) else ", ".join(entity_types)
    )

I suspect that the entity_types list generated by the model contains True or False boolean values, which causes the program to crash. A possible solution is to convert each element in the entity_types list to a string:

if entity_types:
    entity_types_str = (
        entity_types if isinstance(entity_types, str) else ", ".join(map(str, entity_types))
    )

Steps to reproduce

No response

Expected Behavior

No response

GraphRAG Config Used

# Paste your config here

Logs and screenshots

No response

Additional Information

• GraphRAG Version:
• Operating System:
• Python Version:
• Related Issues: