Limit visibility of Media Gallery to ONLY current user's files

Please try this tip for this  :  https://wplms.io/support/knowledge-base/load-few-static-mediaimages-in-media-for-all-instructors-with-instructor-privacy/

Sorry i referred you the wrong tip .If you want to hide all of the content alongwith the posts and categories please enable the Force instructor content privacy  from wplms course manager . If you just want to hide the media then please add this code in your wplms-customizer.php file in wplms customizer plugin . add_action('init','add_custom_filters'); function add_custom_filters(){     remove_filter( 'posts_where', 'wplms_attachments_wpquery_where',10 );     add_filter( 'posts_where', 'custom_wplms_attachments_wpquery_where',30);      }   function custom_wplms_attachments_wpquery_where( $where ){            if( is_user_logged_in() && current_user_can('edit_posts')){               global $current_user;               if( isset( $_POST['action'] ) ){                 if( $_POST['action'] == 'query-attachments' ){                   $where .= ' AND post_author='.$current_user->data->ID;                 }               }             }       return $where; }