NFC Module For arduino

I have NFC and arduino uno when I'll upload the program so an error
('https://s13.postimg.org/9he3wgduv/Capture.png')
how to fix it, I use the code in a wiki website dfrobot
('https://s13.postimg.org/9he3wgduv/Capture.png')
how to fix it, I use the code in a wiki website dfrobot