Why Does PrestaShop Crash? The Most Common Causes of Store Failure

An online store crash means lost sales. In PrestaShop, problems most often stem from module conflicts, failed updates, or server errors.

1. Error 500 – Internal Server Error

Most often appears after:

• Module update
• Changing the PHP version
• Modifying override files

2. White Screen of Death

A blank page with no error message usually indicates a fatal error in PHP. Enabling debug mode can help identify the source of the problem.

3. Module conflict

Some modules interfere with the same hooks or classes, causing a collision.

4. Problems with cron

Malfunctioning cron jobs may block email sending or inventory synchronization.

5. Server too weak

Lack of RAM, low execution time limits or outdated MySQL generate instability.

How to prevent?

• Test updates on a staging copy
• Make a backup before making changes
• Monitor server logs

If your store has stopped operating, a quick diagnosis allows you to limit sales losses.