Angular httpClient interceptor error handling

Question

after reading the documentation on angular about http client error handling, I still don\'t understand why I don\'t catch a 401 error from the server with the code below:

<

Answer 1

You should catch an error using catchError

return next.handle(request)
      .pipe(catchError(err => {
        if (err instanceof HttpErrorResponse) {
            if (err.status === 401) {
                console.log('this should print your error!', err.error);
            }
        }
}));