KeyError:'laptop_battery_state'

edit

Hey guys. I'm working on the migration of ROS hydro in turtlebot 2 to ROS Indigo. I have a problem with the kobuki_dashboard.I can see the kobuki battery but not the laptop one. and when i do a "rostopic echo /turtlebot_../diagnostics_agg" , i can't see the LapTop Battery key in the /Power System . in the logfile it gave this error:

if power_state['laptop_battery_state'] != 'OK': KeyError: 'laptop_battery_state'

Any help,suggestions would be welcomed.

Thank You !