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Error AggregateException: The NPM script start exited without the Angular CLI was listening for requests

03.09.2018 (👁255)


The error appears when you want to start an Angular SPA application on the computer without installing node.js.

 

error message

An unhandled exception occurred while processing the request.

AggregateException: One or more errors occurred. (One or more errors occurred. (The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: Der Befehl "npm" ist entweder falsch geschrieben oder

))

System.Threading.Tasks.Task<TResult>.GetResultCore(bool waitCompletionNotification)

InvalidOperationException: The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: Der Befehl "npm" ist entweder falsch geschrieben oder

Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware.StartAngularCliServerAsync(string sourcePath, string npmScriptName, ILogger logger)

 

 

In the browser

 

 

 

 

Solution:

You have to install Node.js on the computer.

 

Under https://nodejs.org/en/download/

For Windows 10, select the Windows Installer-> Windows Intaller (.msi) 64-bit

And after the download start the installation