找不到Angular Push Notifications服务工作者

Question

亲爱的我想使用angular5订阅Chrome推送服务。我详细介绍了文件以及在生产中出现的错误

我的html

<button class="button button-primary" (click)="subscribeToNotifications()">
          Subscribe
        </button>

我的.ts

import {SwPush} from "@angular/service-worker";


readonly VAPID_PUBLIC_KEY = "BKbm4zVsmx0sJg2IUNNwLYYPsDvYMS_U1GonPKzG_S9_1oe-OWyK_justdEpGDx_UbyYRMwK3mqoEfbTalrECWs";
sub: PushSubscription;

public subscribeToNotifications() {


this.swPush.requestSubscription({
  serverPublicKey: this.VAPID_PUBLIC_KEY
})
.then(sub => {
    this.sub = sub;

    console.log("Notification Subscription: ", sub);

})
.catch(err => console.error("Could not subscribe to notifications", err));
}

我的模块

ServiceWorkerModule.register('/ngsw-worker.js', { enabled: true }),

然后返回