Bundle failed: 'CloudModule' is not exported


I’m trying to add push notification to my Ionic2 app. I’m following this page. My app was working correctly before doing ionic io init as suggested in the ionic2 push doc page now I keep getting this error everytime I do ionic serve:

bundle failed: ‘CloudModule’ is not exported by node_modules/@ionic/cloud-angular/dist/es5/index.js
(imported by src/app/app.module.ts). For help fixing this error see https