Wordpress LScache Plugin: Fatal error since last update ? Monarch plugin error
Last Updated on: Wed, 15 Apr 2026 00:00:02 A few hours ago I updated the plugin and now Im getting fatal errors when posting, trying to deavctivate plugins and other actions. It first mentioned the Monarch plugin in the error message so I attempted to deactivate it, but got the error message again I tried purging the cache and got the same error. Im using a Divi Child Theme. Fatal error: Call to undefined method LiteSpeed_Cache::purge_post() in /home/accountname/public_html/sitenames/wp-content/plugins/monarch/core/components/init.php on line 72 The code around the relevant lines in the file is this.. 69 else if ( class_exists( LiteSpeed_Cache ) ) 70 // LiteSpeed Cache 71 $litespeed = LiteSpeed_Cache::get_instance() 72 !== $post_id ? $litespeed->purge_post( $post_id ) : $litespeed->purge_all() Following the information on the other question on this topic I changed the monarch file code to read The code around the relevant lines in the file is this.. 69 else if ( class_exists( LiteSpeed_Cache ) ) 70 // LiteSpeed Cache 71 $litespeed = LiteSpeed_Cache_Purge::get_instance() 72 !== $post_id ? $litespeed->purge_post( $post_id ) : $litespeed->purge_all() And this seems to have fixed it. Leaving this open so that you are aware of the issue. Thanks. I will update this post once we work out a solution with divi team. Please try v1.1.4 for the compatibility fix
LiteCache Rush: Speed comes from using less, not from doing it faster
Reference