Android MQTT – FATAL EXCEPTION: MQTT Con

If you are using paho android mqtt client, you may get the following error if the broker is down or the client is not able to connect to the Broker

Seems this is due to a bug in this version, you can simply upgrade the version 1.1.1 to fix this issue

for more details you can have look here

https://github.com/eclipse/paho.mqtt.android/issues/158