Warning: Declaration of YOOtheme\Theme\Wordpress\MenuWalker::walk($elements, $max_depth) should be compatible with Walker::walk($elements, $max_depth, ...$args) in /home/httpd/vhosts/mengelt.ch/httpdocs/wp-content/themes/yootheme/vendor/yootheme/theme/platforms/wordpress/src/Wordpress/MenuWalker.php on line 0