title: How to permanently fix chmod changes to an app deployed on Heroku?
body: <p>I just made a post yesterday - <a href="https://stackoverflow.com/questions/72341242/how-to-solve-500-internal-server-error-on-a-deployed-python-app-on-heroku">How to solve &quot;500 internal server error&quot; on a deployed python app on Heroku?</a></p>
  <p>And today I actually have discovered the problem. The program isn't missing, but instead program's access on Heroku has been denied. So, I just did a SSH to Heroku and chmod the exiftool and now it works fine.</p>
  <p>But then comes an another problem. This chmod change is only temporary. After a few minutes, the error comes again and I have to do the chmod thing again to make it work.</p>
  <p>Is there any way to permanently fix this?</p>