title: ModuleNotFoundError: No module named 'openpyxl' However it is up to date
body: <p>I have PyCharm as IDE, using python 3.6, and my <code>openpyxl</code> version is <code>3.0.0</code> 
  However, when I run:</p>
  
  <pre><code>import openpyxl
  </code></pre>
  
  <p>I get </p>
  
  <p><code>ModuleNotFoundError: No module named 'openpyxl'</code> </p>
  
  <p>Why is this happening?</p>