Сканирование плагина IONIC Capacitor BLE не работает

Я изучаю ionic 5 и хочу создать простое приложение, которое отображает список всех ближайших телефонов с поддержкой Bluetooth. Моя проблема в том, что когда я использую сканирование вызова плагина BLE, мои методы обратного вызова никогда не вызываются. Я тестировал это на подключенном телефоне (Samsung 9), а также сгенерировал app-debug.apk и установил его на телефон.

Вот подробности моего проекта. Я использую Capacitor для собственных приложений.

SDK:

tab-1.ts

import { Component, NgZone } from '@angular/core';
import { BLE } from '@ionic-native/ble/ngx';
import { AlertController } from '@ionic/angular';

@Component({
  selector: 'app-tab1',
  templateUrl: 'tab1.page.html',
  styleUrls: ['tab1.page.scss']
})
export class Tab1Page {
text = 'hello';
devices: any[] = [];
constructor(private ble: BLE,
            private ngZone: NgZone,
            public alertController: AlertController) { }
 scan() {
  this.text = 'Loading...';
  console.log('going to this.scan.....');
  this.devices = [];
  this.showAlert('starting scan.....');


  this.ble.scan([], 60).subscribe(devices1=>{
    this.showDeviceList(devices1);
    this.text = devices1;
    this.showAlert('scan finished success');
  },error=> this.showAlert('scan fini with error'), 
  ()=>this.showAlert('scan void finish'));
}

async showDeviceList(devices) {
  const alert = await this.alertController.create({
    header: 'Alert',
    subHeader: 'Subtitle',
    message: 'Going to start scan',
    buttons: ['OK']
  });
  await alert.present();
  console.log('devices are ', devices);
  this.ngZone.run(() => {
    this.devices.push(...devices);
    this.text = 'finished';
  });
}

async showAlert(msg){
  const alert = await this.alertController.create({
    header: 'Alert',
    subHeader: 'Subtitle',
    message: msg,
    buttons: ['OK']
  });
  await alert.present();
}
}

ионная информация:

Package.json:

{
  "name": "COVID-TRACKING",
  "version": "0.0.1",
  "author": "Ionic Framework",
  "homepage": "https://ionicframework.com/",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/common": "~8.2.14",
    "@angular/core": "~8.2.14",
    "@angular/forms": "~8.2.14",
    "@angular/platform-browser": "~8.2.14",
    "@angular/platform-browser-dynamic": "~8.2.14",
    "@angular/router": "~8.2.14",
    "@capacitor/android": "^2.0.1",
    "@capacitor/core": "2.0.1",
    "@ionic-native/ble": "^5.23.0",
    "@ionic-native/core": "^5.0.7",
    "@ionic-native/splash-screen": "^5.0.0",
    "@ionic-native/status-bar": "^5.0.0",
    "@ionic/angular": "^5.0.0",
    "cordova-plugin-ble-central": "^1.2.4",
    "core-js": "^2.5.4",
    "rxjs": "~6.5.1",
    "tslib": "^1.9.0",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.803.20",
    "@angular/cli": "~8.3.23",
    "@angular/compiler": "~8.2.14",
    "@angular/compiler-cli": "~8.2.14",
    "@angular/language-service": "~8.2.14",
    "@capacitor/cli": "2.0.1",
    "@ionic/angular-toolkit": "^2.1.1",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "~8.9.4",
    "codelyzer": "^5.0.0",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.4.0",
    "protractor": "~5.4.0",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.4.3"
  },
  "description": "An Ionic project"
}

Команда для установки плагина:

npm install cordova-plugin-ble-central
npm install @ionic-native/ble
ionic cap sync