Refreshing available widgets...

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/dashboard-widget-editor/widget-refresh-template.php:8 Stack trace: #0 {main} thrown in /home/visaversa/public_html/wp-content/plugins/admin-menu-editor-pro/extras/modules/dashboard-widget-editor/widget-refresh-template.php on line 8