Schema validation failed with the following errors: Data path “.builders['app-shell']” should have required property 'class'

Question

Schema validation failed with the following errors:
  Data path \".builders[\'app-shell\']\" should have required property \'class\'.

Schema validation failed with the          


        

Answer 1

This worked for me.

npm uninstall @angular-devkit/build-angular

npm install @angular-devkit/build-angular@0.13.0

Answer 2

This will do the trick for you:

1. Update your angular cli by running the command ng update @angular/cli @angular/core
2. Run or build your project by running the commands ng s or ng build respectively.

Answer 3

This worked for me:

In package.json

Changed "@angular-devkit/build-angular": "^0.800.0" --> "@angular-devkit/build-angular": "^0.10.0" Then:

 npm install
 ng serve

Specs:

Angular CLI: 6.1.5 Node: 10.15.3 OS: win32 x64 Angular: 6.1.9

Answer 4

1. open cmd from current project
2. npm uninstall @angular-devkit/build-angular
3. npm install --save-dev @angular-devkit/build-angular

Answer 5

1. Opened package.json
2. Changed "@angular-devkit/build-angular": "^0.800.0" to "@angular-devkit/build-angular": "^0.10.0" or changed Changing from "@angular-devkit/build-angular": "^0.802.1" to "@angular-devkit/build-angular": "^0.13.9"
3. Run npm install
4. Run ng serve

The original version can be diferent, but is necessary change it at 0.10.0 or 0.13.9 version that fix the problem

Answer 6

Try to update @angular/core using ng update @angular/cli @angular/core