Auto update shopping cart when clicking -/+ 1 in Woocommerce

The following code was working fine for auto changing the quantity on the shopping cart. Yet, at the moment it only sometimes responds to changing the quantity. What is wrong?

/**
 * @snippet       Automatically Update Cart on Quantity Change - WooCommerce
 * @compatible    Woo 3.4
 */

add_action( 'wp_footer', 'ava_cart_refresh_update_qty', 9999 ); 
function ava_cart_refresh_update_qty() { 
    if (is_cart()) { 
        ?> 
        <script type="text/javascript">
        (function($) {
            var triggerUpdate = function() {
                $('.woocommerce-cart-form .quantity').on('click', '.qty, .plus, .minus', function(){ 
                    console.log('test');
                    $("button[name='update_cart']").trigger("click");
                 });
            }

            triggerUpdate();
           
            $(document).ajaxComplete(function() {
                triggerUpdate();
            });
        })(jQuery);
        </script> 
        <?php 
    } 
}