Fatal error: Uncaught Error: Call to undefined function is_cart() in /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-content/plugins/woocommerce-germanized/includes/class-wc-gzd-checkout.php:177
Stack trace:
#0 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-includes/class-wp-hook.php(292): WC_GZD_Checkout->maybe_remove_shopmark_filters()
#1 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters()
#2 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-includes/plugin.php(484): WP_Hook->do_action()
#3 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-includes/template-loader.php(13): do_action()
#4 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-blog-header.php(19): require_once('/mnt/web410/c0/...')
#5 /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/index.php(17): require('/mnt/web410/c0/...')
#6 {main}
  thrown in /mnt/web410/c0/56/59870756/htdocs/WordPress_SecureMode_02/wp-content/plugins/woocommerce-germanized/includes/class-wc-gzd-checkout.php on line 177