Fatal error: Uncaught Error: Call to undefined function add_action() in /home/rcas/sites/rcas.org/releases/20240530164147/web/app/plugins/simple-page-ordering/simple-page-ordering.php:55 Stack trace: #0 /home/rcas/sites/rcas.org/releases/20240530164147/web/app/plugins/simple-page-ordering/simple-page-ordering.php(38): Simple_Page_Ordering::add_actions() #1 /home/rcas/sites/rcas.org/releases/20240530164147/web/app/plugins/simple-page-ordering/simple-page-ordering.php(488): Simple_Page_Ordering::get_instance() #2 {main} thrown in /home/rcas/sites/rcas.org/releases/20240530164147/web/app/plugins/simple-page-ordering/simple-page-ordering.php on line 55