There are plenty of people here to help you, but you need to do more than that.
If you have an error message then post the complete text of the whole message, and post the code it refers to. Nobody can help if you don't give them the information they need.
i am trying to create a library management system which is supposed to be used to store/keep infp for the library and the library members( book title, author, name and picture for borrower and other stuffs). The app has 6 buttons, delete, save, add,previsous,next, and upload( for upload ...