title: Intellij doesn't show run button
body: <p>Intellij doesn't show run button even if that file is in <em>src</em> folder.</p>
  
  <p><a href="https://i.stack.imgur.com/9O0lP.png"><img src="https://i.stack.imgur.com/9O0lP.png" alt="no run button"></a></p>
  
  <p>Maybe do you know what to do?</p>
  
  <p>P. s. It's strange because that file used to show run button but after recloning git repository it just doesn't show any more.</p>