Streamed MultiPromptChain with websocket: undesired

[bassameter63]

Hello,
I'm setting up a MultiPromptChain that I call asynchronously as follows:
resp=await multichain.arun(input=standalone_question,include_run_info=False,return_only_outputs=True)
or:
resp=await multichain.acall(inputs={"input":standalone_question,},include_run_info=False,return_only_outputs=True)

The MutiPromptChain is constructed based on a streaming llm as follows:

stream_handler = StreamingLLMCallbackHandler(websocket)
stream_manager = BaseCallbackManager([stream_handler])
llm = ChatOpenAI(
model_name=model,
temperature=0.9,
streaming=True,
callback_manager=stream_manager,
verbose=False,
openai_api_key=openai_apik)

My problem is that I get a non desirable markdown code snippet with a JSON object;
with the response in the websocket. Fo example:
{
"destination":"......................................",
"next_inputs":"....................................................."
}
followed by the answer to the question.
I don't want that json object to be streamed in the websocket; just the answer to the question.
Is there a way to do it?

Thanks for answering.
Bassam.