Problem: If you're experiencing a fatal error when enabling Redis Object Cache on your WordPress site, specifically with PHP 8+ where count() is called on a null value in WPML_Posts_Listing_Page::pre_populate_caches(), this might be due to a cache miss causing
$wp_query->posts
to be null. This error typically appears in wp-content/plugins/sitepress-multilingual-cms/menu/post-menus/wpml-posts-listing-page.class.php on line 26. Solution: We recommend updating to WPML version 4.7.5, which addresses this issue by ensuring compatibility with Redis Object Cache and other object cache implementations. You can download the update and view the changelog here: WPML Changelog.
If this solution does not apply to your case, or if it seems outdated, please check related known issues at https://wpml.org/known-issues/, verify the version of the permanent fix, and confirm that you have installed the latest versions of themes and plugins. If issues persist, we highly recommend opening a new support ticket for further assistance.
