How do I enable debugging in PrestaShop?

In order to capture as much detail as possible when an error occurs connecting to PrestaShop, debugging must be enabled in PrestaShop. 

To enable debugging follow these steps:

1. go to config > defines.inc.php
2. change the line: define('_PS_MODE_DEV_', false); set to true
3. you're done

Enabling debugging will allow you to capture error details in your logs in order to understand and better resolve connection issues.