How to enable debug mode on PrestaShop

Enable debug mode on PrestaShop to find out what is causing a 500 error on your PrestaShop website.

1. Open config/defines.inc.php in your code editor (or cPanel File Manager)
2. Find line 28

   define('_PS_MODE_DEV_', false);

3. Change to

   define('_PS_MODE_DEV_', true);

4. Save your changes.

Open the URL on your PrestaShop website which is causing the 500 error and you will see a detailed error report.