Attempt to get length of null array

[Saeron]

I maby not getting how to use it but, I am gonna try to explain.

I am using my xiaomi with android one 10 for testing. I am using ionic with capacitor, but i also try just wiht cordova(last version). I am seting the configuration on the app component and also adding a sucription to onLocation like this:

let config: BackgroundGeolocationConfig = {
        locationProvider: BackgroundGeolocationLocationProvider.RAW_PROVIDER,
        desiredAccuracy: 0,
        stationaryRadius: 20,
        distanceFilter: 0.1,
        interval: 10000,
        fastestInterval: 5000,
        activitiesInterval: 10000,
        url: "http://192.168.1.128:5000",
        startOnBoot: true,
        debug: false, //  enable this hear sounds for background-geolocation life-cycle.
        stopOnTerminate: true, // enable this to clear background location settings when the app terminates
      };
      this.backgroundGeolocation.setConfig(config);
      this.backgroundGeolocation.on(BackgroundGeolocationEvents.location)
        .subscribe((location: BackgroundGeolocationResponse) => {
          console.log("Latitude: ",location.latitude);
        });

I start the background location with a button on my home page, the thing is, I get the first location and then I get the next error and crash:

E/Perf: Fail to get file list io.ionic.starter
    getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array
    Fail to get file list io.ionic.starter
E/Perf: getFolderSize() : Exception_1 = java.lang.NullPointerException: Attempt to get length of null array

I have no idea of what is this, so can anyone help me, I am doing anything wrong? or is actually a bug.