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fix(openai): improve error message for null choices in OpenAI-compatible APIs (#35236)

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nightcityblade
2026-02-15 23:59:04 +08:00
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parent 9a2a10ec21
commit ecac3d891c
1 changed files with 9 additions and 1 deletions
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10
libs/partners/openai/langchain_openai/chat_models/base.py
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@@ -1520,7 +1520,15 @@ class BaseChatOpenAI(BaseChatModel):
raise KeyError(msg) from e
if choices is None:
msg = "Received response with null value for `choices`."
# Some OpenAI-compatible APIs (e.g., vLLM) may return null choices
# when the response format differs or an error occurs without
# populating the error field. Provide a more helpful error message.
msg = (
"Received response with null value for `choices`. "
"This can happen when using OpenAI-compatible APIs (e.g., vLLM) "
"that return a response in an unexpected format. "
f"Full response keys: {list(response_dict.keys())}"
)
raise TypeError(msg)
token_usage = response_dict.get("usage")