In css have added following class
    .ibs-icons-big-error {
        background-image: url('../../../assets/img/cmdelementnew24.svg');
    }


When add image inside using this class then it not appearing

                const icon = new MindFusion.Drawing.Image(config.actionImageRect);
                icon.image.className  = "ibs-icons-big-error";
                icon.image.name = "Action";
                icon.image.addEventListener("load", function () {
                    icon.loaded = true;
                    item.invalidate();
                });
                icon.loaded = true;
                item.getGraphicsContent().push(icon);

I would like to apply image path using class instead of direct path.
Why class not get applied on image?