Fatal error: Uncaught Error: Call to undefined function admin_url() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/woocommerce/includes/admin/helper/views/html-section-nav.php:12 Stack trace: #0 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/woocommerce/includes/admin/helper/views/html-section-nav.php on line 12