Error building docs

[chanhoPark929]

AngularJS is in LTS mode

We are no longer accepting changes that are not critical bug fixes into this project.
See https://blog.angular.io/stable-angularjs-and-long-term-support-7e077635ee9c for more detail.

I'm submitting a ...

• regression from 1.7.0
• security issue
• issue caused by a new browser version
• other

Current behavior:

Expected / new behavior:

Minimal reproduction of the problem with instructions:

AngularJS version: 1.8.x

Browser: [all | Chrome XX | Firefox XX | Edge XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView | Opera XX ]

Anything else:

I'm trying to build the document.
I ran the following command
npx grunt docs

But I'm getting the error
`error: Error processing docs: Error: Cannot find module '../../../build/errors.json'
Require stack:

• C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\docs\config\processors\error-docs.js
• C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\docs\config\index.js
• C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\docs\gulpfile.js
• C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\gulp\bin\gulp.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Object.$process (C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\docs\config\processors\error-docs.js:15:29)
  at C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\dgeni\lib\Dgeni.js:179:54
  at _fulfilled (C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\dgeni\node_modules\q\q.js:834:54)
  at C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\dgeni\node_modules\q\q.js:863:30
  at Promise.promise.promiseDispatch (C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\dgeni\node_modules\q\q.js:796:13)
  at C:\Users\Garibaldi\Downloads\angular.js-master\angular.js-master\node_modules\dgeni\node_modules\q\q.js:604:44`

[petebacondarwin]

This missing file is generated by the build. Please run yarn grunt package first to ensure that all the prerequisite files have been generated.