https://github.com/driftyco/ionic/issues/6776#issuecomment-267961514
https://github.com/driftyco/ionic-app-scripts/issues/596

This problem…. just update

>> ionic info

Ionic Framework
Ionic CLI
Ionic App Lib
Ionic App Scripts

Cordova CLI: 6.5.0
Ionic Framework Version: 2.0.1
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.0.1

So
1、npm update to best new

npm update -g

2、uninstall ionic

npm uninstall ionic

3、install ionic

npm install -g ionic

4、update package.js  in project

npm install -g npm-check-updates
npm-check-updates
npm-check-updates -u
npm install

or only check

npm outdated

5、update ionic-native  (maybe npm-check-updates update to new)

npm update ionic-native

6、maybe
ionic state reset

Finial Step：

ionic info

and

ionic start new-project-for-check-update blank –v2

see package.json  is laste new

ok~~

．developer

ionic run android –prod

．release

ionic build android –release –prod

Usually app start down then 1s for black screen