Fatal error: Uncaught Error: Call to undefined function add_action() in /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/members/addons/members-role-hierarchy/admin/class-manage-roles.php:57 Stack trace: #0 /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/members/addons/members-role-hierarchy/admin/class-manage-roles.php(33): MRH_Manage_Roles->setup_actions() #1 /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/members/addons/members-role-hierarchy/admin/class-manage-roles.php(125): MRH_Manage_Roles::get_instance() #2 {main} thrown in /home/marshalltowncsd/sites/marshalltown.k12.ia.us/releases/20230829083101/web/app/plugins/members/addons/members-role-hierarchy/admin/class-manage-roles.php on line 57