title: ModuleNotFoundError Only when EXE (Python)
body: <p>I am trying to make a program using PySimpleGUI and whenever I run it as a .py (Python) file I get 0 errors and it runs exactly how I want it to, but when I use <em>pyinstaller</em> to compile the .py file to an EXE I get this error:</p>
  <pre><code>Traceback (most recent call last):
  File &quot;guitest.py&quot;, line 2, in &lt;module&gt;
  ModuleNotFoundError: No module named 'PySimpleGUI'
  [14792] Failed to execute script guitest
  </code></pre>
  <p>I am not sure why it is saying that, I have it installed. As I said before as long as it's a .py file it runs perfectly.</p>