xamarin Plugin for Permission not working

Hi ,

I am trying to get my phones latitude and longitude in xamarin forms pcl using GeoLocation plugin
when all the permissions are granted its working fine
but when I manually remove the Permission for Location in App permission(Testing on real device-Moto g5 s+)
the app crashes..
The RequestPermissionsAsync is not requesting for any permission.

the result of the method is "Id = 1, Status = WaitingForActivation, Method = {null}"
what should be done?