`Encountered exception writing response

agent_or_engine = create_summary_index_agent_from_s3_keys(
    model=model,
    user_id=user_id,
    content_s3_key_extension_pairs=content_s3_key_extension_pairs,
    history=history,
)
....
    summary_index = SummaryIndex.from_documents(
        documents, llm=LLM_INSTANCES[model], embed_model=get_embed_model()
    )
    retriever = get_retriever(
        user_id=user_id,
        model=model,
        index=summary_index,
    )
    chat_engine = CondensePlusContextChatEngine.from_defaults(
        retriever=retriever,
        llm=LLM_INSTANCES[model],
        chat_history=history,
        memory=ChatMemoryBuffer.from_defaults(  # pyright: ignore
            chat_history=history,
            token_limit=128000,  # When the memory parameter is omitted, the token limit is a small number and causes an error to be thrown.
        ),
    )

response = await agent_or_engine.astream_chat(message)  # pyright: ignore

if self._memory:
    asyncio.create_task(
        chat_response.awrite_response_to_history(self._memory)
    )
    chat_response._ensure_async_setup()
    await chat_response._is_function_false_event.wait()