Errors: Data path “.builders['app-shell']” should have required property 'class'

Question

I am getting this error while running my application. Here are the details of my application.

Angular CLI: 7.3.3 
Node: 10.15.1 
Angular: 7.2.7 
@angular-de         


        

Answer 1

Same issue after trying to upgrade to Ng8 which failed due to dependency issues.

npm uninstall @angular-devkit/build-angular

then I used,

npm install @angular-devkit/build-angular@0.12.4

fixed it...