Error 500 after installing or updating a module

Error 500 after updating or installing modules are often due to one or more of these elements:

• Module Compatibility: Some modules may not be compatible with each other or with your version of PrestaShop.
• Site Cache: An outdated cache can cause conflicts after an update.
• Code Conflicts: Changes in module files can conflict with each other.
• Incomplete Updates: Sometimes, updates do not finish correctly, leaving corrupted files behind.

Solutions you can implement

1. Check Module Compatibility:
   • Verify that all modules are compatible with your version of PrestaShop.
   • Disable the recently installed or updated modules one by one to identify the one causing the conflict.
2. Clear the Cache:
   • Via FTP: Go to ./var/cache and then delete the /prod folder.
   • Via back-office: In Advanced Settings > Performance, click on Empty the cache.
3. Activate Debug Mode:
   • Via FTP: Go to ./config/defines.inc.php and then change the value of 'PS_MODE_DEV' to true.
   • Via back-office: In Advanced Settings > Performance, activate Debug Mode.
4. Restore a Backup:
   • If you have a recent backup before the modules were modified, consider restoring your store to that state. This is a last resort, since you risk losing data!

If these solutions do not solve the problem, you can also consult the article that deals with more general 500 errors: Correcting a 500 error.

We also offer Advanced Technical Support, which includes a comprehensive diagnosis and personalized resolution of your problem. If you have any questions or wish to proceed with this option, please do not hesitate to contact us.