capacitor-community / background-geolocation return D/Capacitor: Location not available

I am trying to use capacitor-community / background-geolocation. i think the background runs like it supposed to be. but it didnt return me the locatio. it returns D/Capacitor: Location not available.

i dont know what happen, i think i just set up the requirement for this plugin. but it just wont give me the location...

here is my AndroidManifest.xml

<?xml version='1.0' encoding='utf-8'?>
<manifest package="ai.squad.kominfo.sbh" xmlns:android="http://schemas.android.com/apk/res/android">
    <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme" android:usesCleartextTraffic="true">
        <activity android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode" android:label="@string/title_activity_main" android:launchMode="singleTask" android:name="ai.squad.kominfo.sbh.MainActivity" android:theme="@style/AppTheme.NoActionBarLaunch" android:exported="true">
            <intent-filter> 
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <provider android:authorities="${applicationId}.fileprovider" android:exported="false" android:grantUriPermissions="true" android:name="androidx.core.content.FileProvider">
            <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/file_paths" />
        </provider>
        <service
            android:name="com.equimaps.capacitor_background_geolocation.BackgroundGeolocationService"
            android:enabled="true"
            android:exported="true"
            android:foregroundServiceType="location" />
    </application>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-feature android:name="android.hardware.location.gps" />
</manifest>

And String.xml

<!--
        The channel name for the background notification. This will be visible
        when the user presses & holds the notification. It defaults to
        "Background Tracking".
    -->
    <string name="capacitor_background_geolocation_notification_channel_name">
        Background Tracking
    </string>

    <!--
        The icon to use for the background notification. Note the absence of a
        leading "@". It defaults to "mipmap/ic_launcher", the app's launch icon.

        If a raster image is used to generate the icon (as opposed to a vector
        image), it must have a transparent background. To make sure your image
        is compatible, select "Notification Icons" as the Icon Type when
        creating the image asset in Android Studio.
    -->
    <string name="capacitor_background_geolocation_notification_icon">
        drawable/ic_tracking
    </string>

This is how i code it inside my page.ts

import {BackgroundGeolocationPlugin} from "@capacitor-community/background-geolocation";

const BackgroundGeolocation = registerPlugin<BackgroundGeolocationPlugin>("BackgroundGeolocation");

  ngOnInit() {
    this.getLatLong();
    if(this.plt.is('capacitor')){
     this.backGroundLocation();
    }
  }

async backGroundLocation() {

         await BackgroundGeolocation.addWatcher({
            backgroundMessage: 'Cancel to prevent battery drain',
            backgroundTitle: "Tracking You.",
            requestPermissions: true,
            stale: false,
            distanceFilter: 50,
          },
          function callback(location, error) {
            if (error) {
              if (error.code === "NOT_AUTHORIZED") {
                  if (window.confirm(
                      "This app needs your location, " +
                      "but does not have permission.\n\n" +
                      "Open settings now?"
                  )) {
                      // It can be useful to direct the user to their device's
                      // settings when location permissions have been denied. The
                      // plugin provides the 'openSettings' method to do exactly
                      // this.
                      BackgroundGeolocation.openSettings();
                  }
              }
              return console.error('error'+error);
          }

          return console.log('test:'+location);
          
        }
        )
  }

This is my variables.gradle file, in case this is related

ext {
    minSdkVersion = 21
    compileSdkVersion = 30
    targetSdkVersion = 31
    androidxActivityVersion = '1.2.0'
    androidxAppCompatVersion = '1.2.0'
    androidxCoordinatorLayoutVersion = '1.1.0'
    androidxCoreVersion = '1.3.2'
    androidxFragmentVersion = '1.3.0'
    junitVersion = '4.13.1'
    androidxJunitVersion = '1.1.2'
    androidxEspressoCoreVersion = '3.3.0'
    cordovaAndroidVersion = '7.0.0'
}

and here is my MainActivity.java, i read in some website that i need to code something here. but it gave me another error, so i decided not to. cause i think in this android version, Plugin does not have to be added manually inside this file

package ai.squad.kominfo.sbh;
import com.getcapacitor.BridgeActivity;

public class MainActivity extends BridgeActivity {

}

so guys, anyone who knows how to use this plugin, help me please...