title: Couldn't deploy GAE (Google App Engine) application (Java SDK)
body: <p>I was trying this quick start but I couldn't deploy the app. I made Google Cloud Platform account, cloud platform project and app engine application.
  I used <code>mvn appengine:update</code> command.</p>
  
  <p>Result was</p>
  
  <pre><code>[INFO] Running -A masas-first-project -V masas-first-project1 --oauth2 update /home/masa/Code/googleAppEngine/java-docs-samples/appengine/helloworld/target/appengine-helloworld-1.0-SNAPSHOT
  The following URL can be used to authenticate:
    https://accounts.google.com/o/oauth2/auth?access_type=offline&amp;approval_prompt=force&amp;client_id=550516889912.apps.googleusercontent.com&amp;redirect_uri=urn:ietf:wg:oauth:2.0:oob&amp;response_type=code&amp;scope=https://www.googleapis.com/auth/appengine.admin%20https://www.googleapis.com/auth/cloud-platform
  Attempting to open it in your browser now.
  </code></pre>
  
  <p>And it was like
  <a href="https://i.stack.imgur.com/rUIDB.png" rel="nofollow noreferrer">I don't know where to paste code</a></p>