latest updates throws out error messages
I am running homebridge 1.6.0 with node 18.12.1 on macOS Ventura 13.0.1 and the latest update to 0.28.1 throws out these error messages below with my Roborock S5 on Firmware 3.5.7:

```
[12/13/2022, 4:12:21 PM] [Dobby] [Model=unknown] getSpeed | No vacuum cleaner is discovered yet.
[12/13/2022, 4:12:21 PM] [Dobby] [Model=unknown] getCleaningRoom | No vacuum cleaner is discovered yet.
[12/13/2022, 4:12:21 PM] [Dobby] [Model=unknown] getCleaningRoom | No vacuum cleaner is discovered yet.
[12/13/2022, 4:12:21 PM] [Dobby] [Model=unknown] getCleaningRoom | No vacuum cleaner is discovered yet.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'On': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Status Low Battery': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Battery Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Charging State': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Occupancy Detected': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Change Indication': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Life Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Change Indication': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Life Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Change Indication': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Life Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Change Indication': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Life Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Change Indication': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:21 PM] [homebridge-xiaomi-roborock-vacuum] This plugin threw an error from the characteristic 'Filter Life Level': Unhandled error thrown inside read handler for characteristic: Not connected yet. See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:24 PM] [homebridge-xiaomi-roborock-vacuum] This plugin slows down Homebridge. The read handler for the characteristic 'Serial Number' was slow to respond! See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:24 PM] [homebridge-xiaomi-roborock-vacuum] This plugin slows down Homebridge. The read handler for the characteristic 'Firmware Revision' was slow to respond! See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:24 PM] [homebridge-xiaomi-roborock-vacuum] This plugin slows down Homebridge. The read handler for the characteristic 'Rotation Speed' was slow to respond! See https://homebridge.io/w/JtMGR for more info.
[12/13/2022, 4:12:24 PM] [Dobby] [Model=roborock.vacuum.s5] WAR changedSpeed | Speed was changed to 104%, this speed is not supported
```

Rolling back to 0.28.0 and everything is working just fine. 