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Fix wrong prompt in refine chain (#1770)

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I got this during testing 

```
ValueError: Missing some input keys: {'existing_answer'}
```

Upon review, the initial prompt should be `QUESTION_PROMPT_SELECTOR`.

Co-authored-by: Bao Nguyen <bnguyen@roku.com>
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Bao Nguyen 2023-03-19 10:03:45 -07:00 committed by GitHub
parent b1b4a4065a
commit 85e4dd7fc3
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2
langchain/chains/question_answering/__init__.py
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@ -155,7 +155,7 @@ def _load_refine_chain(
**kwargs: Any, **kwargs: Any,
) -> RefineDocumentsChain: ) -> RefineDocumentsChain:
_question_prompt = ( _question_prompt = (
question_prompt or refine_prompts.REFINE_PROMPT_SELECTOR.get_prompt(llm) question_prompt or refine_prompts.QUESTION_PROMPT_SELECTOR.get_prompt(llm)
) )
_refine_prompt = refine_prompt or refine_prompts.REFINE_PROMPT_SELECTOR.get_prompt( _refine_prompt = refine_prompt or refine_prompts.REFINE_PROMPT_SELECTOR.get_prompt(
llm llm