Failed to run a 60.00 timer in 'LightsOn v1.6.18' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.LightsOn.VehicleLiftChangePower () [0x00038] in <87813c58042d4702ac1d7fdab2d2f971>:0
  at Oxide.Plugins.LightsOn.<OnServerInitialized>m__14 () [0x00000] in <87813c58042d4702ac1d7fdab2d2f971>:0
n, 0b/s out
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <c2afd8354b8b4f3ca451cf5a1aa111c3>:0

Same error:

Failed to run a 60.00 timer in 'LightsOn v1.6.19' (IndexOutOfRangeException: Index was outside the bounds of the array.)
  at Oxide.Plugins.LightsOn.VehicleLiftChangePower () [0x00038] in <5683608d608a4505ade91ab3bf8d8ca4>:0 
  at Oxide.Plugins.LightsOn.<OnServerInitialized>m__14 () [0x00000] in <5683608d608a4505ade91ab3bf8d8ca4>:0 
  at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <12678b905a6d43c3a9cc366104306651>:0 ​

Hello i configure only 

Candles Furnaces Lanterns and the plugin say this error and back to default config

(20:56:42) | Unloaded plugin Lights On v1.6.19 by mspeedie

(20:56:42) | [Lights On] Configuration appears to be outdated; updating and saving

(20:56:42) | [Lights On] Configuration changes saved to LightsOn.json

(20:56:42) | Loaded plugin Lights On v1.6.19 by mspeedie

(20:57:42) | Failed to run a 60.00 timer in 'LightsOn v1.6.19' (IndexOutOfRangeException: Index was outside the bounds of the array.)

at Oxide.Plugins.LightsOn.VehicleLiftChangePower () [0x00038] in <89e795581ed8432a912d1eac4d2a1365>:0

at Oxide.Plugins.LightsOn.<OnServerInitialized>m__14 () [0x00000] in <89e795581ed8432a912d1eac4d2a1365>:0

at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <46ff2b534abb4b35952608167523b7ec>:0

Default plugin after restart

(09:13:20) | Failed to run a 300.00 timer in 'LightsOn v1.6.19' (IndexOutOfRangeException: Index was outside the bounds of the array.)

at Oxide.Plugins.LightsOn.ProcessDevices (System.Boolean state, System.String prefabName) [0x004fd] in <c3074c884911469ca875b7bd44e74de6>:0

at Oxide.Plugins.LightsOn.DeviceTimerProcess () [0x00010] in <c3074c884911469ca875b7bd44e74de6>:0

at Oxide.Core.Libraries.Timer+TimerInstance.FireCallback () [0x00018] in <46ff2b534abb4b35952608167523b7ec>:0