Fatal error: Uncaught Error: Call to undefined function is_cart() in /var/www/ssd1189/htdocs/Kunden/whatelse/wp-content/plugins/woocommerce-gift-wrapper/includes/class-gift-wrapper-wrapping.php:133 Stack trace: #0 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-includes/class-wp-hook.php(308): The_Gift_Wrapper_Wrapping->wp(Object(WP)) #1 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array) #2 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #3 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-includes/class-wp.php(797): do_action_ref_array('wp', Array) #4 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-includes/functions.php(1332): WP->main('') #5 /var/www/ssd1189/htdocs/Kunden/whatelse/wp-blog-header.php(16): wp() #6 /var/www/ssd1189/htdocs/Kunden/whatelse/index.php(17): require('/var/www/ssd118...') #7 {main} thrown in /var/www/ssd1189/htdocs/Kunden/whatelse/wp-content/plugins/woocommerce-gift-wrapper/includes/class-gift-wrapper-wrapping.php on line 133