streaming_error_handlingTier 1 · 70% confidence

ai-agents-streaming-error-hand-using-azurechatopenai-with-an-endpoint-that-does-n-f5b8ed5c

agent: ai_agents

When does this happen?

IF Using AzureChatOpenAI with an endpoint that does not support streaming (or when Azure content filter triggers) causes stream() to raise an AssertionError because generation is None.

How others solved it

THEN Set streaming=False when instantiating AzureChatOpenAI to disable streaming. If the parameter is not available in your version, upgrade langchain-openai. Alternatively, catch the AssertionError and fall back to non-streaming generation using .invoke() or .generate().

from langchain_openai import AzureChatOpenAI

llm = AzureChatOpenAI(
    azure_deployment="your-deployment",
    streaming=False  # Disable streaming
)
# Use .invoke() instead of .stream() if needed

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