Position error:application does not have sufficient geolocation permission

geolocation plugin build and run first time then position error:application does not have sufficient geolocation permission occurs and when open app second time then no error

Just now realised that , it is working fine in Android version 5.1 .
But not working on Android version 6.0 .

Below is my code for get the country from the current location.
Sometimes , I got the array from geolocation which gave me country details…

Actual scenario is: if i run the app and location service is not enable then it just loading infinitely.
If i remove the app from task manager and reopen the app then i get the proper result. Location service also enabled.

Dont know why location service is not enable before geolocation gets currentpostion at first time.

these two function i have called in ionViewDidLoad().

requestAccuracy() {
    this.locationAccuracy.canRequest().then((canRequest: boolean) => {
      if(canRequest) {    this.locationAccuracy.request(this.locationAccuracy.REQUEST_PRIORITY_HIGH_ACCURACY).then(() => {
            console.log('Request successful.')
            // this.closeModal();
          error => {
            console.log('Error requesting location permissions', error)
            // this.closeModal();
         // close the app .


//requestAccuracy() ends

setCountryFromLocation() {

    console.log("In setCountryFromLocation");
    let loading = this.loadingController.create({content : "Loading,please wait..."});
    var options = {
        enableHighAccuracy: true

    this.geolocation.getCurrentPosition(options).then((position) => {
     this.nativeGeocoder.reverseGeocode(position.coords.latitude, position.coords.longitude)
    .then((result: NativeGeocoderReverseResult) => {
          var obj;
         var country;
        this.myOb.countryName = result.countryName;
        // alert for not getting reverseGeocode
    .catch((error: any) => {console.log(error)

    }, (err) => {
    );// geolocation ends  
  }//setCountryFromLocation () ends