An unknown error occurred. (3014)

Good day to all, I am using iTunes as a means of entertainment while traveling. I want to add some contents of my iPod using iTunes, and I meet an error message, that tells me that my iPod could not be restored. I posted below the screen shot of the error.
ITunes
The iPhone “iPhone” could not be restored. An unknown error occurred. (3014)
As I read the error, I don't have any idea about the error. What I did is to restart my computer and connected my iPod again, but same I encountered the same error message.
I used the internet to look for a similar problem and solution, nothing was posted.
Please share some thoughts on this error message.
Thank you.
