Run success on android device,but had a err,see blow

meteor version
i test cordova plugin cordova-plugin-geolocation@2.4.1 on android,this app setup success,but this plugin did not work.

this is two question:
1.solve the err
2.why the plugin did not work

this err i had searched on google,it said add --server–only,but i was only test on android-device not deploy