Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/ubermenu_alt/includes/shortcodes.php:31 Stack trace: #0 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/ubermenu_alt/includes/shortcodes.php on line 31