Mqtt broker is disconnecting frequently even though it has a unique client id #800

def on_connect(client, userdata, flags, rc):
    if rc==0:
        print("connected OK Returned code=",rc)
    else:
        print("Bad connection Returned code=",rc)
    
    print("Subscribing to topic","data/#")
    client.subscribe("data/#")

    
def on_disconnect(client, userdata, rc):
   print("Client Got Disconnected")
   if rc != 0:
       print('Unexpected MQTT disconnection. Will auto-reconnect')
      
   else:
       print('rc value:' + str(rc))

broker_address="ip"
port = 'port'
print("creating new instance")
client = mqtt.Client(clean_session=True) #create new instance
client.on_connect = on_connect
client.on_message = on_message #attach function to callback
client.on_disconnect = on_disconnect

print("connecting to broker")
client.connect(broker_address, port=port,) #connect to broker
client.loop_forever() #stop the loop