Data path "['build']" should have required property 'builder'

Question

Schema validation failed with the following errors: Data path "['build']" should have required property 'builder'. Error: Schema validation failed with the following errors: Data path "['build']" should have required property 'builder'.

Answer 1

Add below in angular.json under main project schema.

"build": {
      "builder": "@angular-devkit/build-angular:browser",
       ...
 }