Fatal error: Uncaught Error: Call to undefined function is_cart() in /homepages/21/d240846915/htdocs/domainetixier/wp-content/plugins/woocommerce-incremental-product-quantities/incremental-product-quantities.php:168 Stack trace: #0 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/class-wp-hook.php(286): Incremental_Product_Quantities->input_value_validation('') #1 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #2 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/plugin.php(453): WP_Hook->do_action(Array) #3 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/script-loader.php(1435): do_action('wp_enqueue_scri...') #4 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/class-wp-hook.php(286): wp_enqueue_scripts('') #5 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array) #6 /homepages/21/d240846915/htdocs/domainetixier/wp-includes/plugin.php(453): WP_Hook->do_ac in /homepages/21/d240846915/htdocs/domainetixier/wp-content/plugins/woocommerce-incremental-product-quantities/incremental-product-quantities.php on line 168