Fatal error: Uncaught Error: Call to undefined function is_shop() in /home/customer/www/holzcluster.eu/public_html/wp-content/themes/applique/functions/title-controller.php:166 Stack trace: #0 /home/customer/www/holzcluster.eu/public_html/wp-includes/class-wp-hook.php(307): df_archive_title('') #1 /home/customer/www/holzcluster.eu/public_html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #2 /home/customer/www/holzcluster.eu/public_html/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #3 /home/customer/www/holzcluster.eu/public_html/wp-content/themes/applique/functions/title-controller.php(10): do_action('applique_title_...') #4 /home/customer/www/holzcluster.eu/public_html/wp-content/themes/applique/header.php(35): applique_title_controller() #5 /home/customer/www/holzcluster.eu/public_html/wp-includes/template.php(770): require_once('/home/customer/...') #6 /home/customer/www/holzcluster.eu/public_html/wp-includes/template.php(716): load_template('/home/customer/...', true, Array) #7 /home in /home/customer/www/holzcluster.eu/public_html/wp-content/themes/applique/functions/title-controller.php on line 166