- fix a bug that the program will crash when the MQTT msg is of wrong format
- fix a bug that the program will crash when the MQTT msg is of wrong format

LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS,LinkItONEDevGroup/LASS