Digital Compass Problem on Robot Arduino

Hello guys, i got a problem with my digital compass on my robot arduino (the official https://www.arduino.cc/en/Guide/Robot). When i want to use any function in my sketch that use the compass, it bug and i have the feeling that my compass isn’t responding …
Well if anyone can help don’t hesitate <3 !

From the robot web page you linked:

You'll need to calibrate the compass module of the robot so it rotates smoothly. If you're using an old model, which has Honeywell HMC 6352, you can refer to this tutorial: Calibrate Compass