title: Error deploying Angular2 app on Google Cloud
body: <p>I have been attempting to deploy an Angular2 application with Google App Engine and have been running into issues. I get the following error when trying to deploy:</p>
  
  <pre><code>Updating service [default]...failed.                                                                                                          
  ERROR: (gcloud.app.deploy) Error Response: [9] 
  Application startup error:
  yarn start v0.21.3
  $ ng serve 
  ** NG Live Development Server is running on http://localhost:8080 **
   52% building modules 357/395 modules 38 active .../position/overlay-position-builder.js
  </code></pre>
  
  <p>The error seems to point to <code>@angular/material</code> given the line <code>.../position/overlay-position-builder.js</code>.</p>
  
  <p>I built the app using <code>@angular-cli</code>.</p>
  
  <p>There is nothing of value in the logs that I can see.</p>
  
  <p>Any ideas on what the issue might be and how to resolve this?</p>