title: Gulp bundle --ship: The build failed because a task wrote output to stderr
body: <p>I've been getting this error when trying to do a <code>gulp bundle --ship</code> command:</p>
  
  <blockquote>
    <p><em>The build failed because a task wrote output to stderr.
    Exiting with exit code: 1</em></p>
  </blockquote>
  
  <p>I'm pretty new to this so have no idea how to proceed with it. It's happening even when I run through the helloworld webpart now. The <code>gulp serve</code> works and I can bundle and package the solution as long as I don't add a <code>--ship</code> to it. I've written and published apps before on the same machine so I don't know what is different now.</p>
  
  <p>I've uninstalled every extension and re-installed the application but it's still doing it. Any help would be appreciated.</p>