Could not find module "@angular-devkit/build-angular"

Hi Guys ,

This blog is about the issue Could not find module "@angular-devkit/build-angular" . This error comes when you run the command ng serve .

The complete error log is as follows :


Could not find module "@angular-devkit/build-angular" from "F:\\progvocab\\study\\gitRepo\\new\\qanda".
Error: Could not find module "@angular-devkit/build-angular" from "F:\\progvocab\\study\\gitRepo\\new\\qanda".
    at Object.resolve (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\core\node\resolve.js:141:11)
    at Observable.rxjs_1.Observable [as _subscribe] (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\architect\src\architect.js:132:40)
    at Observable._trySubscribe (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:43:25)
    at Observable.subscribe (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:29:22)
    at DoOperator.call (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\tap.js:29:23)
    at Observable.subscribe (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:24:22)
    at C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\util\subscribeTo.js:22:31
    at Object.subscribeToResult (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\util\subscribeToResult.js:7:45)
    at MergeMapSubscriber._innerSub (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:75:38)
    at MergeMapSubscriber._tryNext (C:\Users\progvocab\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:72:14)

Now , this error comes if the dev dependency is missing angular devkit .
So in the command prompt type the following command to install angular devkit

npm install --save-dev @angular-devkit/build-angular

Hope this helps in resolving the issue you faced .