title: ImportError: cannot import name types
body: <p>I'm trying the app I cloned from following Github.</p>
  
  <p><a href="https://github.com/sfujiwara/qa-system-sample.git" rel="noreferrer">https://github.com/sfujiwara/qa-system-sample.git</a>
  (This app uses python flask, Google Natural Language API and so on.)</p>
  
  <p>But, I cannot run this on Google App Engine.Following Error occurs.</p>
  
  <p>Error:</p>
  
  <pre><code>ImportError: cannot import name types
  at &lt;module&gt; (/base/data/home/apps/b~qa-system-sample2/20171223t122211.406411375873194303/lib/google/cloud/language_v1/__init__.py:17)
  at &lt;module&gt; (/base/data/home/apps/b~qa-system-sample2/20171223t122211.406411375873194303/lib/google/cloud/language.py:17)
  at &lt;module&gt; (/base/data/home/apps/b~qa-system-sample2/20171223t122211.406411375873194303/factoid.py:5)
  at &lt;module&gt; (/base/data/home/apps/b~qa-system-sample2/20171223t122211.406411375873194303/main.py:9)
  at LoadObject (/base/alloc/tmpfs/dynamic_runtimes/python27/54c5883f70296ec8_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py:85)
  at _LoadHandler (/base/alloc/tmpfs/dynamic_runtimes/python27/54c5883f70296ec8_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py:299)
  at Handle (/base/alloc/tmpfs/dynamic_runtimes/python27/54c5883f70296ec8_unzipped/python27_lib/versions/1/google/appengine/runtime/wsgi.py:240)
  </code></pre>
  
  <p>This occurs at <code>from google.cloud.language_v1 import types</code>in lib/google/cloud/language_v1/_ _init__.py.
   Although, There is types.py in /lib/google/cloud/language_v1.</p>
  
  <p>I'm a beginner of python, so I couldn't find out a reason of this error.Please tell me the way to resolve this error.Thanks in advance.</p>