[求助]运行homebridge后提示错误
<img width="915" alt="2018-11-16 19 02 48" src="https://user-images.githubusercontent.com/43290890/48617729-39fbb000-e9d2-11e8-8c4f-53589c7b9b88.png">

[2018-11-16 18:59:54] [MiAqaraPlatform] [INFO]Aqara LAN protocol server is listening on port: 9898
[2018-11-16 18:59:54] Homebridge is running on port 54642.
[2018-11-16 18:59:55] [MiAqaraPlatform] [ERROR]TypeError: Cannot read property 'getCharacteristic' of undefined
[2018-11-16 18:59:55] [MiAqaraPlatform] [ERROR]TypeError: Cannot read property 'getCharacteristic' of undefined
[2018-11-16 18:59:55] [MiAqaraPlatform] [ERROR]TypeError: Cannot read property 'getCharacteristic' of undefined