Unhandled Exceptions
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**Describe The Bug:**
My LG Tinq1 device is added (Refrigerator) but keep getting errors on all sensors and will not update.

**To Reproduce:**
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**Expected behavior:**
No errors and attribute updates.

**Logs:**

[8/25/2021, 8:07:54 AM] [homebridge-lg-thinq] This plugin generated a warning from the characteristic 'Current Temperature': characteristic value expected valid finite number and received "NaN" (number). See https://git.io/JtMGR for more info.
(node:91934) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'options' of null
    at DeviceModel.enumValue (/usr/local/lib/node_modules/homebridge-lg-thinq/src/lib/DeviceModel.ts:133:51)
    at DeviceModel.lookupMonitorName (/usr/local/lib/node_modules/homebridge-lg-thinq/src/lib/DeviceModel.ts:181:19)
    at Status.get isExpressFridgeOn [as isExpressFridgeOn] (/usr/local/lib/node_modules/homebridge-lg-thinq/src/v1/devices/Refrigerator.ts:65:58)
    at Refrigerator.updateAccessoryCharacteristic (/usr/local/lib/node_modules/homebridge-lg-thinq/src/devices/Refrigerator.ts:93:85)
    at EventEmitter.emit (events.js:400:28)
    at /usr/local/lib/node_modules/homebridge-lg-thinq/src/platform.ts:167:25
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (internal/process/task_queues.js:95:5)
(node:91934) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 68)

**Plugin Config:**

```json
Show your Homebridge config.json here, remove any sensitive information.
```

**Screenshots:**
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**Environment:**

* **Plugin Version**: 1.1.1
* **Homebridge Version**: 1.3.4
* **Node.js Version**: 14.17.5
* **NPM Version**: 6.14.14
* **Operating System**: Mac

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