[FIX] correccion en la condicion

static/src/js/widget.js

@@ -119,8 +119,8 @@ function pos_customize_product_pack_widget(instance, module){
             $("button", this.$el).click(function(e){
                 var order = self.pos.get('selectedOrder');
                 var selectedline = self.pos.get('selectedOrder').selected_orderline;
-                var product = self.pos.get('selectedOrder').selected_orderline.product;                
-                if(product.description == false){
+                var product = self.pos.get('selectedOrder').selected_orderline.product;
+                if(!$.isArray(product.description)){
                     var ProductPackList = [];
                     ProductPackList.push({
                         order : selectedline.order.uid,