idk man i tried it myself too before i added it and its like it doesnt exist really
edit; for the fix change it to this in utilwidget;
public static RS2Widget getWidget(Script i, String action, String spellName) {
List<RS2Widget> widg = i.getWidgets().filter(new WidgetActionFilter(action), new WidgetSpellFilter(spellName));
if (widg != null) {
return widg.get(0);
}
return null;
}