I have added a box fee attribute and a delivery date attribute, and am getting the following error in my system log.

? Log type:   OrderError
? Severity:   11
? Message:   Error while placing order. Box Fee (includes cooler box and heat packets);Fed Ex Hold Location Pickup for quicker transit time (before noon sometimes alot earlier);
? Exception:   System.Exception: NopSolutions.NopCommerce.Common.NopException: Box Fee (includes cooler box and heat packets);Fed Ex Hold Location Pickup for quicker transit time (before noon sometimes alot earlier); at NopSolutions.NopCommerce.BusinessLogic.Orders.OrderService.PlaceOrder(PaymentInfo paymentInfo, Customer customer, Guid orderGuid, Int32& orderId)

Any suggestions for this?