The editor has encountered an unexpected error 📝 WordPress

WordPress block editor: The editor has encountered an unexpected error (Attempt Recovery / Copy Error)

A JavaScript error broke the block editor — usually a plugin/theme block script conflict, cached old scripts, or a browser extension.

Seen on: WordPress

Meaning

“Copy Error” gives the stack trace. Recently updated plugins, optimisation plugins combining/minifying admin scripts, or outdated custom blocks are frequent causes.

Common causes

  • Plugin or theme block script error
  • Script optimization/minification applied to admin
  • Cached outdated JS after updates
  • Browser extension interference

⚡ Quick fix

  1. Click Copy Error and check the browser console
  2. Disable plugins one by one (Health Check troubleshooting mode)
  3. Clear caches and exclude wp-admin from optimisation

Detailed fix by platform

WordPress

  1. define('SCRIPT_DEBUG', true); // load unminified core scripts for clearer errors

How to diagnose

  1. Console — Error and file
  2. Plugins — Recently updated?
  3. Extensions — Works in incognito?

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

🧠 Still stuck? Analyze your error

Paste the full message, response headers or stack trace — we'll detect the platform and point to the most likely cause.