Fatal error: Uncaught Error: Using $this when not in object context in /home/handllu1/public_html/redboys/wp-content/plugins/simple-membership/views/admin_members_list.php:13 Stack trace: #0 {main} thrown in /home/handllu1/public_html/redboys/wp-content/plugins/simple-membership/views/admin_members_list.php on line 13