Fix WordPress Critical Site Error

My WordPress site suddenly started throwing the “There has been a critical error on this website” screen right after a recent plugin update—although I’m not ruling out a theme conflict either. I can still access the WP-Admin area, but the public-facing pages refuse to load. I haven’t deactivated any plugins or switched to a default theme yet, so the installation is exactly as it was when the error appeared.

I need someone who can jump in, trace the root cause, and bring the site back online without losing data or custom styling. PHP error logs, server panel, and full admin credentials are ready for you as soon as we start.

Deliverables
• Diagnose the exact source of the critical error (plugin, theme, or other).
• Apply a safe fix and restore normal site loading.
• Provide a brief report outlining what broke, how you fixed it, and any preventive steps I should take.