Errors: Data path ".builders['app-shell']" should have required property 'class' Ask 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-devkit/architect -0.13.3 
@angular-devkit/build-angular- 0.800.1 
@angular-devkit/build-optimizer - 0.800.1 
@angular-devkit/build-webpack - 0.800.1 
@angular-devkit/core -7.3.3 
@angular-devkit/schematics -7.3.3 
@angular/cli -7.3.3 
@ngtools/webpack -8.0.1 
@schematics/angular -7.3.3 
@schematics/update 0.13.3 
rxjs 6.3.3 
typescript 3.2.4 
webpack 4.30.0