Python testapp4 with kafka failing to connect

I am testing out the kafka in deepstream-tes4 and the output says it has problem connecting to kafka

Using winsys: x11
%3|1596690595.198|FAIL|rdkafka#producer-1| [thrd:]: Connect to ipv4# failed: Connection refused
%3|1596690595.199|ERROR|rdkafka#producer-1| [thrd:]: Connect to ipv4# failed: Connection refused

eventhough my config are as follow:

python3 -i ‘/opt/nvidia/deepstream/deepstream-5.0/samples/streams/sample_720p.h264’ -p ‘/opt/nvidia/deepstream/deepstream-5.0/lib/’ --conn-str=“;9092;nvidia_topic” -s=0

So I don’t know why its still trying to connect to

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson Nano)
• DeepStream Version 5.0
• JetPack Version (4.4)
• TensorRT Version
• NVIDIA GPU Driver Version (valid for GPU only)

Please check sources/libs/kafka_protocol_adaptor, there have README and test sample, to troubleshoot the issue.