This error indicates that the HTTP server has returned an HTTP/401 Unauthorized error.

Things to try:

  * Check that you are attempting to access the correct URI.

  * Check that you are able to access the URI from a web browser.

  * If the URI requires authentication, then check that you are supplying any required authentication credentials (e.g. via the ''[[:cfg:username]]'' and ''[[:cfg:password]]'' settings).