title: Python 3.6: tensorflow install on windows failed with TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType
body: <p>I am new to Python and Tensorflow. I tried to install tensorflow using the command pip install --upgrade tensorflow. However, the installation fails at two points:</p>
  
  <ol>
  <li>Building wheel for wrapt (setup.py)</li>
  <li>Running setup.py install for wrapt</li>
  </ol>
  
  <p>During both these instances, the error is the same</p>
  
  <pre><code>TypeError: stat: path should be string, bytes, os.PathLike or integer, not NoneType
  </code></pre>
  
  <p>Can anybody suggest some solution for this error?</p>