Cannot find module '@angular-devkit/build-angular/src/angular-cli-files/models/webpack-configs/utils'

Hi community,

I am upgrading our ionic app to latest version of ionic and angular. I thought the best would be to start by testing it using the conference app.

ionic serve works perfectly.

ionic cordova run android returns the following build error.

Cannot find module ‘@angular-devkit/build-angular/src/angular-cli-files/models/webpack-configs/utils’

The package.json is the original one downloaded from the conference app.
Is there something that I am missing ?

@ionic/angular-toolkit@3

Seems have fixed it. Strange how the default package.json that comes with the confirmation app is not working first time. Is it the same for you ?