Help! Compass error! And gps not receiving before compass throws an error

[Lucas drone collector]

My karma is having gps problems where it says compass error, please calibrate, so I did, but it says calibration failed after. And the gps does not acquire before it throws an error again. The gps acquire goes to 80% and then it says compass error please calibrate, and when I try again, it will have the no gps unable to calibrate error again. I also successfully calibrated imu too. Also, where is the compass located in the drone? Is it in the landing gear? I checked and there was a set of wires going to it. If anyone knows how to fix my karma, please let me know