Arduino UNO 6.1 Exscercise

Im doing the Arduino UNO Make:Getting Started with Arduino project 6.1"Pretend to be a a keyboard, and type a text string when a button is pressed". We copy the code from the experiments tab in the Arduino language application, and when compiled we recieved the error message:Build options changed, rebuilding all
In file included from C:\Users\Owner\AppData\Local\Temp\arduino_modified_sketch_660972\KeyboardMessage.ino:23:0:

C:\Program Files\Arduino\libraries\Keyboard\src/Keyboard.h:29:2: warning: #warning “Using legacy HID core (non pluggable)” [-Wcpp]

#warning “Using legacy HID core (non pluggable)”


C:\Users\Owner\AppData\Local\Temp\arduino_modified_sketch_660972\KeyboardMessage.ino: In function ‘void setup()’:

KeyboardMessage:33: error: ‘Keyboard’ not found. Does your sketch include the line ‘#include <Keyboard.h>’?


C:\Users\Owner\AppData\Local\Temp\arduino_modified_sketch_660972\KeyboardMessage.ino: In function ‘void loop()’:

KeyboardMessage:47: error: ‘Keyboard’ not found. Does your sketch include the line ‘#include <Keyboard.h>’?
Keyboard.print("You pressed the button ");


exit status 1
‘Keyboard’ not found. Does your sketch include the line ‘#include <Keyboard.h>’?
I believe the issue comes from the fact that the project is being don on a LATITUDE E6400 Laptop and therefore it cannot find an external keyboard. Any help is greatly accepted plz and thanks.