Client event not received from nodejs socketio server

[pluzmedia]

I can successfully emit to NodeJS socketio from python client by the following code
sio.emit("coords", {"id": rowId})

but emits from the NodeJS sever are not received by python client

NodeJS server code
socket.emit("catch_all", res.id)

Python Client code

@sio.on('catch_all')
def catch_all(data):
    print('message received with ', data)
    sio.emit('coords', {'response': 'my response'})

or

@sio.event
def catch_all(data):
   print('message received with ', data)
   sio.emit('coords', {'response': 'my response'})

Any help?