KAGG Compatibility


WordPress is not fully compatible with PHP 8.0 – 8.3. Remaining known PHP 8.0+ issues are deprecation notices.

The same is related to many popular plugins such as WooCommerce, Jetpack, Gravity Forms and others. Mainly, they produce deprecation notices from the Action Scheduler library.


  • The plugin blocks deprecation notices, user deprecation notices, notices, warnings, user notices, and user warnings.
  • The list of folders from which errors are blocked can be filtered. This list may specify any WordPress Core, plugin and theme folders.
  • Plugin filters out errors from these folders only. Errors produced by other code are not blocked, which helps in debugging user code.
  • During activation, plugin installs a mu-plugin kagg-compatibility-error-handler.php into the /wp-content/mu-plugins/ folder. It contains the error handler, which loads earlier than any plugin or theme.

Plugin Support


  1. Upload kagg-compatibility folder to the /wp-content/plugins/ directory.
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.

Can I contribute?

Yes, you can!


8, Payares de 2023
Almost all major plugins were not ready to switch to php 8.1: Yoast SEO, Rank Math, Mail Poet, etc. You get a bunch of warnings about deprecation. This plugin allows you to solve this problem by simply enabling it. Simple, fast, comfortable
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Contributors & Developers

“KAGG Compatibility” is open source software. The following people have contributed to this plugin.


Translate “KAGG Compatibility” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Tested with WordPress 6.5.
  • Tested with WooCommerce 8.6.


  • Added normalization of dirs to handle errors from.
  • Added plugins’ directories to the default list.


  • Fixed improper display of the “rate plugin” message on options.php.
  • Fixed fatal error with improperly coded third-party error handlers.


  • Fixed conflict with hCaptcha plugin.


  • Tested with WordPress 6.4.
  • Added settings page to specify the list of directories to process errors from.
  • Added ability to chain error handlers.
  • Added compatibility with Query Monitor.
  • Added filter for folders.
  • Added filter for error levels.


  • Tested with WordPress 6.3.


  • Tested with WordPress 6.2.
  • Tested with PHP 8.2.


  • Tested with WordPress 6.0.


  • Fixed creation of the mu-plugin folder if it does not exist.


  • Initial release.