Fatal error: Uncaught Error: Call to undefined function responsive_header() in /homepages/21/d639136289/htdocs/app639880603/wp-content/themes/heimathaus_responsive_child/header.php:54 Stack trace: #0 /homepages/21/d639136289/htdocs/app639880603/wp-includes/template.php(723): require_once() #1 /homepages/21/d639136289/htdocs/app639880603/wp-includes/template.php(672): load_template('/homepages/21/d...', true) #2 /homepages/21/d639136289/htdocs/app639880603/wp-includes/general-template.php(41): locate_template(Array, true) #3 /homepages/21/d639136289/htdocs/app639880603/wp-content/themes/responsive/home.php(28): get_header() #4 /homepages/21/d639136289/htdocs/app639880603/wp-includes/template.php(725): require('/homepages/21/d...') #5 /homepages/21/d639136289/htdocs/app639880603/wp-includes/template.php(672): load_template('/homepages/21/d...', false) #6 /homepages/21/d639136289/htdocs/app639880603/wp-includes/general-template.php(168): locate_template(Array, true, false) #7 /homepages/21/d639136289/htdocs/app639880603/wp-c in /homepages/21/d639136289/htdocs/app639880603/wp-content/themes/heimathaus_responsive_child/header.php on line 54