PrestaShop 500 error: your store back online today
A 500 error brings orders to an immediate halt: no catalogue, no payments, no revenue. Our French developers analyse the PHP logs, pinpoint the exact cause and get your store back online—often in under an hour.
- Free diagnosis from your first call, with a quote before any work begins
- Full backup of all files and the database before any fix
- Reviewing PHP, server and PrestaShop logs to pinpoint the root cause
- Clear post-recovery report covering the cause, fix and prevention

The symptoms we check first
A systematic diagnosis, in the right order: we isolate the cause before changing a single file.
PHP fatal error
A module, override or extended class is triggering a fatal error that brings the entire store down.
Database connection failed
Login credentials changed, MySQL server overloaded or database table corrupted after an outage.
Incompatible module
Une installation ou une mise à jour de module incompatible avec votre version de PrestaShop ou de PHP.
Memory limit or timeout exceeded
Valeurs memory_limit ou max_execution_time trop basses pour un import, un cache ou une génération d'images.
Broken cache and compilation
Corrupted var/cache or class_index folders following an interrupted deployment.
Files modified without your knowledge
Une erreur 500 apparue sans intervention de votre part peut trahir une compromission.
What we check—and then fix
What We Check
- PHP logs, server logs and the PrestaShop error log
- The server’s actual PHP version and its compatibility with your PrestaShop version
- Recently installed or updated modules and overrides
- Core file integrity and permissions
- Database connection, load, and integrity
What We Fix
- Controlled activation of debug mode to identify the exact error
- Disabling the faulty module or override without breaking anything else
- Fixing the code or replacing the incompatible component
- Cache rebuild and full checkout process testing
- Security hardening to prevent recurrence: versions, permissions, and monitoring
Get emergency support now
Calling is still the fastest option. Otherwise, describe the issue and we’ll reply with an estimate.
Is it business-critical? Call us.
+33 6 31 55 57 57 — de 9h à 22h, 7j/7. Un développeur, pas un standard.
What to read while your store is down
The most useful pages and guides when every minute counts.
Every hour of downtime costs you orders
A French developer will review your store today. You receive an estimate before any work begins and only pay for the actual time spent.
Questions fréquentes
How long does it take to fix a 500 error?
In most cases, we identify the cause within 15 to 30 minutes and get the store back online within the hour. Complex cases, such as a corrupted database or security breach, take longer, but we always provide an estimate for approval before starting work.
Vais-je perdre des commandes ou des données ?
No. We always back up your files and database before making any changes, and we never delete order data.
What access details do you need to provide?
FTP/SFTP or SSH access, database access and, ideally, a back-office account. If you only have partial access, we can still get started.
What if the error comes back after the fix?
The fix includes a detailed report and security hardening. If the same issue recurs as a result of our work, we will resolve it at no extra charge.