spotify not showing in home app and error shown in homebridge log

[boardy]

I have gone through the instructions and added the plugin and added the client id, secret id and refresh token to the config of the plugin in homebridge but when trying to add it to the home app its not showing up and the homebridge log shows the following:

Register Spotify device: Accessory { obj: JsValue(Object) }
Error getting volume state: JsValue(Object({"message":"invalid json response body at https://api.spotify.com/v1/me/player?device_id=fc325e791e3d3ae4ad5dd2949e951e6b0e5fa32c reason: Unexpected end of JSON input","type":"invalid-json"}))

I've installed version homebridge-rusty-spotify v0.4.5

Thanks
Chris