Fatal error: Declaration of YOOtheme\Theme\Wordpress\MenuWalker::walk($elements, $max_depth) must be compatible with Walker::walk($elements, $max_depth, ...$args) in /homepages/35/d130552546/htdocs/relaunch.gravleon.de/wp-content/themes/yootheme/vendor/yootheme/theme-wordpress/src/MenuWalker.php on line 115