Fatal error: Uncaught Error: Call to a member function add() on null in /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme-child/builder/hd-timeline/element.php:18 Stack trace: #0 /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme/vendor/yootheme/builder/src/Builder.php(289): YOOtheme\Configuration\Resolver->{closure}(Object(stdClass), Array) #1 /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme/vendor/yootheme/builder/src/Builder.php(274): YOOtheme\Builder->applyTransforms(Object(stdClass), Array) #2 /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme/vendor/yootheme/builder/src/Builder.php(274): YOOtheme\Builder->applyTransforms(Object(stdClass), Array) #3 /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme/vendor/yootheme/builder/src/Builder.php(274): YOOtheme\Builder->applyTransforms(Object(stdClass), Array) #4 /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme in /homepages/17/d34711914/htdocs/neu_wp_bendersysteme/wp-inhalt/themes/yootheme-child/builder/hd-timeline/element.php on line 18