Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'register_initial_settings' not found or invalid function name in /home/ltwb/public_html/wp-includes/class-wp-hook.php on line 298

Fatal error: Call to undefined function get_registered_settings() in /home/ltwb/public_html/wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php on line 227