Media Plugin - onStatusUpdate callback function usage?

Ionic Framework ionic-v3
6

Here’s what I did:

Service that handles all the audio bits:


    import { Events } from 'ionic-angular';

    declare var cordova: any;//necessary for file handling

    @Injectable()
    export class AudioService {
        constructor(
            public eventCtrl: Events
        ){
            ...
        }

        onStatusUpdate(status){
            this.eventCtrl.publish('audio:stopped',status);
            console.log("event thrown");
        };
    }

And on the page that receives the data:

    import { Events } from 'ionic-angular';

    @Injectable()
    export class AudioPage {
        constructor(
            public eventCtrl: Events
        ){
            ...
            this.eventCtrl.subscribe('audio:stopped', status => {
                console.log("event catch");
                if(status==3 || status==4){
                    this.pauseAll();
                }
            });
        }
    }

But I’m getting this error:

typeError: Cannot read property 'publish' of undefined