This theme failed to load properly and was paused within the admin backend.

Since WordPress 5.2, a fatal error in a theme triggers recovery mode. WordPress pauses the theme for the person who signs in through the recovery link and shows this message in the admin area. Visitors still see the critical error page until the error in the theme is fixed.

Common causes

References

1. Fatal error recovery mode in WordPress 5.2 (Make WordPress Core)
2. Debugging in WordPress (Advanced Administration Handbook)

Rather not fix it yourself? Let WP119 handle it automatically.

White screens and fatal errors (plugin conflicts, PHP version incompatibility) are handled automatically: on a copy of your site in the recovery station, the system turns on debug mode, finds the plugin or theme causing the error and deactivates it (not deleted); a white screen caused by exhausted memory is fixed by raising the memory limit. After the fix, the home page and inner pages are re-verified, and only then is the result written back to your host (in WP admin mode, a recovered package is delivered instead). Fixes are made on a copy of your site in the recovery station and written back only after re-verification passes. In your site’s database, the protected tables (members, comments, orders and form submissions) are copied as structure only. In SSH and FTP mode, the system creates a pre-recovery backup on your host before writing back and restores from it if verification after write-back fails. If the recovery cannot be completed, the recovery fee is refunded in full.

1. Initial assessment: Site URL entry
2. Copy to the recovery station: Work on a copy
3. Diagnosis: Item-by-item checks
4. Recovery and verification: Home and inner pages
5. Write-back or delivery: Only after verification passes