I have this python code:

@app.route('/chatstm', methods=['POST'])
async def chatstm():
    if 'user_id' not in session:
        return jsonify({'error': 'Unauthorized'}), 401
    
    # Obtenha os parâmetros da requisição
    message = request.json.get('message')
    pdf_pc_id = request.json.get('pdf_pc_id')
    pdf_id = request.json.get('pdf_id')
    conversation_id = request.json.get('conversation_id')
    
    # Construir o objeto de chat
    chat = build_chatstm({
        "pdf_pc_id": pdf_pc_id,
        "conversation_id": conversation_id,
        "pdf_id": pdf_id
    })
    
    async def generate():
        # Iterar sobre os eventos assíncronos do chat
        async for event in chat.astream_events(
            {"input": message},
            config={"configurable": {"conversation_id": conversation_id}}, 
            version="v2"
        ):
            if event["event"] == "on_chat_model_stream":
                yield f"{repr(event['data']['chunk'].content)}"
        
                

    return Response(stream_with_context(generate()), content_type='text/event-stream')

and it always returns me this error:

TypeError: ‘function’ object is not iterable

I need to stream this data, but the only function available with the characteristics I need is a async one. I’ve looked in the entire internet, tried iterate the iterator, and so on.. Nothing works

Can someone help me to fix it ?