Quick summary
A production support note about restoring CMS access after a caching plugin caused WordPress to show a critical-error screen.
The problem
The WordPress dashboard and site workflow were blocked by a critical error, preventing both the client and content team from working in the CMS.
What I checked
- The critical-error state and available WordPress access
- Recently active performance and cache plugins
- The failing plugin path
- Site behavior after isolating the suspected component
What I changed
- Removed the failing cache-plugin path from the active runtime
- Confirmed the site and CMS became available again
- Documented that the removed optimization behavior would need a safer replacement
Result
WordPress access was restored quickly, and the failed optimization layer was isolated instead of leaving the whole site unavailable.
Where this fix usually leads next
This kind of work usually connects back to Production Debugging, WordPress Support and Site Speed so the fix note can lead into a clearer support path instead of staying as an isolated one-off task.
What I'd watch next
- Whether a compatible plugin version can be reintroduced safely
- Whether page caching needs a replacement before traffic peaks
- Whether error logs reveal a broader compatibility problem