Error checking alerts: 403
**Describe the bug**
Got this error in homebridge: Error checking alerts: 403
The Nest Hello is not working anymore.

**To Reproduce**
Steps to reproduce the behavior:
1. Tried to reboot the Docker container, did not work

**Expected behavior**

**Last Working Version**
homebridge-nest-cam v2.3.4

Include with your bug report this version info:
```
node --v12.16.3
homebridge --1.1.0
```

Make sure you have the latest LTS from https://nodejs.org
and the latest packages: `npm upgrade -g homebridge homebridge-nest-cam`

Also include debug log output from startup through seeing the issue:
`homebridge -D`
