after the update to 2.8.0, the following error occurs
Hallo,
after the update to 2.8.0, the following error occurs

`Sep 15 11:26:53 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] Registering platform 'homebridge-weather-plus.WeatherPlus'
Sep 15 11:26:53 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] ---
Sep 15 11:26:53 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] Loading 2 platforms...
Sep 15 11:26:53 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] [Wetter-plus] Initializing WeatherPlus platform...
Sep 15 11:26:53 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] TypeError: city.toLowerCase is not a function
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at Object.weather.setCity (/usr/local/lib/node_modules/homebridge-weather-plus/node_modules/openweather-apis/index.js:29:43)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at new OpenWeatherMapAPI (/usr/local/lib/node_modules/homebridge-weather-plus/api/openweathermap.js:19:28)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at WeatherStationPlatform.<anonymous> (/usr/local/lib/node_modules/homebridge-weather-plus/index.js:103:19)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at Array.forEach (<anonymous>)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at new WeatherStationPlatform (/usr/local/lib/node_modules/homebridge-weather-plus/index.js:87:23)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at Server._loadPlatforms (/usr/local/lib/node_modules/homebridge/lib/server.js:337:32)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at Server.run (/usr/local/lib/node_modules/homebridge/lib/server.js:90:36)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at module.exports (/usr/local/lib/node_modules/homebridge/lib/cli.js:59:10)
Sep 15 11:26:53 hbridge3 homebridge[2120]:     at Object.<anonymous> (/usr/local/lib/node_modules/homebridge/bin/homebridge:17:22)
Sep 15 11:26:54 hbridge3 homebridge[2120]:     at Module._compile (internal/modules/cjs/loader.js:936:30)
Sep 15 11:26:54 hbridge3 homebridge[2120]: [2019-9-15 11:26:53] Got SIGTERM, shutting down Homebridge...
`

How can I fix this error?

Here my configuration:
`        {
            "platform": "WeatherPlus",
            "name": "Wetter-plus",
            "service": "openweathermap",
            "key": "xxxxxxxxxxxxxxxxxxx",
            "location": 2940132,
            "locationCity": "Chemnitz, DE",
            "locationGeo": [
                50.8323,
                12.9253
            ],
            "language": "de",
            "forecast": [
                1,
                2,
                3,
                4,
                5
            ]
        },
`
I'm going back to 2.7.2, everything's fine.

Thanks