Update white screens

ser_func_array() expects parameter 1 to be a valid callback, function ‘staging_admin_style_notice_textdomain’ not found or invalid function name in /srv/users/serverpilot/apps/andrewmartin23/public/wp-includes/class-wp-hook.php on line 286

Warning: Cannot modify header information – headers already sent by (output started at /srv/users/serverpilot/apps/andrewmartin23/public/wp-includes/class-wp-hook.php:286) in /srv/users/serverpilot/apps/andrewmartin23/public/wp-admin/includes/misc.php on line 1196