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

 

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

 

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

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