We'll create fresh WordPress site with KAGG Compatibility installed. You have 20 minutes to test the plugin after that site we'll be deleted.
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.
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.