Homebridge crash on getCharacteristics
Hi Folks,

Got this exception when moving TV items around on the accessories page of home bridge.
UPDATE: Actually seems to happen when you push the TV Volume button to mute/unmute..
Thought it was worthy of a quick bug report.

Ta

[9/22/2020, 09:48:13] TypeError: Cannot read property 'getCharacteristic' of undefined
    at Timeout._onTimeout (/usr/lib/node_modules/homebridge-webos-tv/index.js:919:28)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7)
[9/22/2020, 09:48:13] Got SIGTERM, shutting down Homebridge...
[9/22/2020, 09:48:13] [Config] Failed to get characteristics for LG TV Volume with iid 18: socket hang up
[9/22/2020, 09:48:18] [HB Supervisor] Homebridge Process Ended. Code: 143, Signal: null