Fix an error page after an update, with a developer's safety net
Your product page loads again quickly, with a small documented fix and a backup of the original.
What it replaces: 1-4 h of emergency developer time
What you write to Claude
„logs show a fatal in override/classes/Product.php after the ps 9 update (method signature mismatch). show me the file, propose a fix compatible with 9.x, apply it on staging first”
The problem
After the update the product page shows the generic 'Oops, an error occurred' screen. The error log points to old custom code.
What Claude does
- Claude reads the error and finds the file causing it.
- It proposes the smallest fix and shows it.
- After your yes it backs up the file, applies the fix on the test copy and checks the page.
- Then it repeats the fix on the live shop with a new preview.
What you get
The page loads again with a minimal, documented fix. The original file is kept as a backup.
You stay in control
You see every change before it is saved and nothing happens without your yes. This deep repair access uses the separate, extra-protected connection, works only for the few hours you switch it on, and keeps a copy of every changed file or record.
Related use cases
- Understand the error messages after an add-on update
- Check shop health before an update
- Try risky changes on a test copy of the shop first
- Fix a bug in an add-on's code until the author ships a fix
- Fix a shop file that blocks Google, with a backup
For developers
- Area
- 5 · Service mode
- Connector
- service connector
- In the free Audit
- no, paid version only
- For
- Developer, Agency / freelancer
- Tools
- ps_get_logs, ps_server_file, ps_inspect_page, ps_list_file_backups, ps_restore_file_backup, ps_clear_cache, ps_check_shop_health
Step by step
- Reads the error with ps_get_logs and confirms the file and line.
- In service mode, reads override/classes/Product.php with ps_server_file (action read).
- Proposes a minimal fix compatible with 9.x and calls ps_server_file (action edit); the diff preview runs a PHP syntax check and a backup is made before saving.
- After your approval saves on the staging connector, re-checks ps_get_logs and the page with ps_inspect_page (and clears the cache with ps_clear_cache if Appearance is on), then repeats on production with a new preview.
- If anything goes wrong, restores with ps_list_file_backups and ps_restore_file_backup.
Safety
Service mode (block 5) works only through the service connector (separate token, allowlisted IP addresses) and only while its time-limited switch is on (1, 4, 8 or 24 h); then it switches itself off, and the owner gets an e-mail when it is switched on. PHP files are syntax-checked and backed up before saving; the module has no tool that runs arbitrary PHP code. Protected files (database credentials, .env, the module's own folders) are out of reach. If the shop is fully down, the module's rescue key can restore backed-up files without PrestaShop running.
Last updated: 2026-10-05