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Updated to latest angular and getting following error when I run ng serve. I couldn't understand what would be the issue.

Could not find module "@angular-devkit/build-angular" from "F:\\angular\\July\\FinalTest". Error: Could not find module "@angular-devkit/build-angular" from "F:\\angular\\July\\FinalTest". at Object.resolve (C:\Users\User\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\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\@angular-devkit\archit ect\src\architect.js:132:40) at Observable._trySubscribe (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:43:25) at Observable.subscribe (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:29:22) at DoOperator.call (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\tap.js:29:23) at Observable.subscribe (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\Observable.js:24:22) at C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\util\subscribeTo.js:22:31 at Object.subscribeToResult (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\util\subscribeToResult.js:7: 45) at MergeMapSubscriber._innerSub (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:75 :38) at MergeMapSubscriber._tryNext (C:\Users\User\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\rxjs\internal\operators\mergeMap.js:72: 14) 

ng -v command display

 Angular CLI: 6.1.1 Node: 8.11.3 OS: win32 x64 Angular: 6.1.0 ... animations, common, compiler, core, forms, http ... platform-browser, platform-browser-dynamic, router Package Version --------------------------------------------------------- @angular-devkit/architect 0.7.1 (cli-only) @angular-devkit/build-angular <error> @angular-devkit/core 0.7.1 (cli-only) @angular-devkit/schematics 0.7.1 (cli-only) @angular/cli <error> @angular/compiler-cli <error> @angular/language-service <error> @schematics/angular 0.7.1 (cli-only) @schematics/update 0.7.1 (cli-only) rxjs 6.2.2 typescript 2.7.2 (cli-only) 

How could I fix this. Please help me someone

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  • 1
    Try npm install @angular-devkit/build-angular. See also related github.com/angular/angular-cli/issues/10661 Commented Jul 27, 2018 at 14:27
  • @Igor still same issue Commented Jul 27, 2018 at 14:46
  • Did you read the other comments from the github ticket (see link in previous comment). There are other proposed solutions that might work for you. Commented Jul 27, 2018 at 14:50

1 Answer 1

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A possible solution is to install devDependencies with "save-dev" and the same for dependencies.

npm i --save-dev @angular/cli @angular-devkit/build-angular @angular/compiler @angular/compiler-cli

Finally finish up with npm install and npm update.

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