What should I do if an extension is causing a fatal error in Joomla 5

1. Restore your site from a backup: If the fatal error occurred after an update, restore your site to its previous working state using a recent backup[2].

2. Enable debug mode and increase error reporting: This will provide more detailed information about the error, helping you identify the problematic extension[2].

3. Check the error logs: Review the Joomla update log (administrator/logs/joomla_update.php) and server error logs to pinpoint where the error occurred[2].

4. Identify the problematic extension: Based on the error messages and logs, determine which extension is causing the issue.

5. Update the extension: Check if there's an updated version of the problematic extension that's compatible with Joomla 5. Many issues can be resolved by updating to the latest version.

6. Contact the extension developer: If updating doesn't resolve the issue, reach out to the extension developer for support or to check if they have a Joomla 5 compatible version in the works.

7. Disable the extension: If the issue persists, try disabling the problematic extension through the database if you can't access the Joomla administrator panel.

8. Use a clean database for restoration: When restoring from a backup, use an empty database to ensure there are no remnants from the failed update[2].

9. Consider alternative extensions: If the extension is not being updated or supported, look for alternative extensions that provide similar functionality and are compatible with Joomla 5.

10. Perform a clean installation: In some cases, it might be necessary to perform a fresh installation of Joomla 5 and then carefully reinstall your extensions and restore your content.

Remember to always backup your site before making any significant changes or updates. If you're not comfortable performing these steps, consider seeking help from a Joomla professional or the Joomla community forums.