title: Google Cloud vision API: "Request had insufficient authentication scopes."
body: <p>Hi I'm trying to use google's cloud vision API, specifically this example: <a href="https://cloud.google.com/vision/docs/label-tutorial#label_tutorial_1" rel="noreferrer">https://cloud.google.com/vision/docs/label-tutorial#label_tutorial_1</a></p>
  
  <p>I followed this tutorial: <a href="https://cloud.google.com/vision/docs/getting-started#set_up_a_service_account" rel="noreferrer">https://cloud.google.com/vision/docs/getting-started#set_up_a_service_account</a> for setting up a service account but when I run my code I get: </p>
  
  <pre><code>googleapiclient.errors.HttpError: &lt;HttpError 403 when requesting https://vision.googleapis.com/$discovery/rest?version=v1 returned "Request had insufficient authentication scopes."&gt;
  </code></pre>
  
  <p>Can anybody help? I can't figure out what's going on, my code is 1:1 with the tutorials.</p>