Good afternoon. Following instructions from the hosting provider with LiteSpeed, a login-password was created to connect Memcached object cache. The plugin settings showed extension enabled, connection successful. But after switching on the object cache, immediately a critical error occurred on the site – i.e. no admin panel and the site on the client side categorically refused to work until the LiteSpeed plugin folder was renamed through the file manager. Where to look for the problem? The kernel and plugins are of the latest version. Tested also on another site looking for the culprit of other themes or plugins – but no, it is after turning on the object cache even empty Vorpdress stops working.