Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/wordpress/wp-content/plugins/et-shortcodes/shortcodes.php:7 Stack trace: #0 {main} thrown in /var/www/vhosts/awxpokmt.host213.checkdomain.de/htdocs/playground/wordpress/wp-content/plugins/et-shortcodes/shortcodes.php on line 7