Fatal error: Uncaught Error: Call to undefined function create_function() in /var/www/html/c-kunad.de/wp-content/plugins/woocommerce-collapsing-categories/includes/class-wcc-widget.php:61 Stack trace: #0 /var/www/html/c-kunad.de/wp-content/plugins/woocommerce-collapsing-categories/woocommerce-collapsing-categories.php(42): require() #1 /var/www/html/c-kunad.de/wp-content/plugins/woocommerce-collapsing-categories/woocommerce-collapsing-categories.php(640): Woocommerce_Collapsing_Categories->__construct() #2 /var/www/html/c-kunad.de/wp-settings.php(388): include_once('/var/www/html/c...') #3 /var/www/html/c-kunad.de/wp-config.php(116): require_once('/var/www/html/c...') #4 /var/www/html/c-kunad.de/wp-load.php(37): require_once('/var/www/html/c...') #5 /var/www/html/c-kunad.de/wp-blog-header.php(13): require_once('/var/www/html/c...') #6 /var/www/html/c-kunad.de/index.php(17): require('/var/www/html/c...') #7 {main} thrown in /var/www/html/c-kunad.de/wp-content/plugins/woocommerce-collapsing-categories/includes/class-wcc-widget.php on line 61