You will get error response when system can’t get the item for you. Here are the examples: Account overslot: Each account have a limit slot for download such as 350 slot, 750 slot, 100 slot(like freepik)… When it get daily limit or reach out of stock, it need time to reset or update new account. Account dead Server connecting corrupt Resource maintenance So many reason, but error its mean you cant get that item at that time. And please try again later. because system already re-try itself for 5 times before response error. So you don’t have to make many request.