I had the same problem just this morning and I solved by installing
npm install @ionic/app-scripts@latest --save-dev
npm install ionic-app-lib --save
Ionic cordova
hai mr.norlan i solve this problem.
pls uninstall the ionic and cordova and reinstall it once again.
For me, it was only finally solved by re-adding the platform:
cordova platform rm ios
cordova platform add ios
Problem:
I started seeing this issue after I updated Ionic
Everything built fine and I didn’t see any errors or warnings in the terminal. But the page was blank when I viewed it in Chrome via ionic serve. Console had ERR_ABORTED for build files likes build\main.js, build\main.css etc.
Solution:
This was fixed after I updated app-scripts -
npm install @ionic/app-scripts@latest
More info here - https://github.com/ionic-team/ionic-app-scripts/issues/340