title: OpenCart error 500 only for index.php
body: <p>I have been trying to manually migrate OpenCart 2.3.0.2 from Plesk to cPanel and so far it has been working ok. I've uploaded all the files into the file manager's root directory and set both config.php files, the first one under the root directory, and the second one under the admin directory. </p>
  
  <p>Now here goes the problem. Whenever I try to load the page (example.com), I get <strong>error 500</strong>. However, when I try to access the <code>example.com/admin</code> page, that one loads successfully. I have managed to log in there a half a dozen times. Also I have created a <code>info.php</code> file containing <code>phpinfo();</code> and have put the latter file within the root directory. So then I tried to access <code>example.com/info.php</code> and that file loaded too. But getting example.com to work always returns error 500. I have even tried reuploading and replacing index.php file, but to no avail.</p>
  
  <p>Please note that I have double and triple checked the <code>config.php</code> and <code>admin/config.php</code> files for typing errors and I'm pretty confident there are not any. </p>
  
  <p>Any ideas what I should try next? </p>