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

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