Fatal error: Uncaught Error: Call to undefined function add_query_arg() in /home/visaversa/public_html/wp-content/plugins/admin-menu-editor-pro/extras/modules/metaboxes/metaboxes-template.php:7 Stack trace: #0 {main} thrown in /home/visaversa/public_html/wp-content/plugins/admin-menu-editor-pro/extras/modules/metaboxes/metaboxes-template.php on line 7