Ionic 5 FCM 推送通知声音不起作用

Question

我使用 FCM 插件为 Ionic 5 推送通知演示创建了一个推送演示。为此，我正在关注此 example 和此 tutorial。这是我所做的代码。

import { Component } from '@angular/core';
import { Platform } from '@ionic/angular';
import { INotificationPayload } from 'cordova-plugin-fcm-with-dependecy-updated';
import { FCM } from 'cordova-plugin-fcm-with-dependecy-updated/ionic/ngx';
@Component({
  selector: 'app-home',
  templateUrl: 'home.page.html',
  styleUrls: ['home.page.scss'],
})
export class HomePage {
  public hasPermission: boolean;
  public token: string;
  public pushPayload: INotificationPayload;

  constructor(private platform: Platform, private fcm: FCM) {
    this.setupFCM();
  }
  private async setupFCM() {
    await this.platform.ready();
    console.log('FCM setup started');

    if (!this.platform.is('cordova')) {
      return;
    }
    console.log('In cordova platform');

    console.log('Subscribing to token updates');
    this.fcm.onTokenRefresh().subscribe((newToken) => {
      this.token = newToken;
      console.log('onTokenRefresh received event with: ', newToken);
    });

    console.log('Subscribing to new notifications');
    this.fcm.onNotification().subscribe((payload) => {
      this.pushPayload = payload;
      console.log('onNotification received event with: ', payload);
    });

    this.hasPermission = await this.fcm.requestPushPermission();
    console.log('requestPushPermission result: ', this.hasPermission);

    this.token = await this.fcm.getToken();
    console.log('getToken result: ', this.token);

    this.pushPayload = await this.fcm.getInitialPushPayload();
    console.log('getInitialPushPayload result: ', this.pushPayload);
  }

  public get pushPayloadString() {
    return JSON.stringify(this.pushPayload, null, 4);
  }
}

我可以在应用打开和关闭时收到推送通知，而且我在推送通知中收到图标。

我在 firebase 中启用了声音选项：

请帮忙...