It looks like the library for QMC5883LCompass is not included in the libraries folder. There is one in the esp32 folder, but it's for QMC5883L, while source/stable/v2.20.04/AntTrack/Compass.ino includes QMC5883LCompass.h. Is it this one: QMC5883LCompass?
Thanks for the feedback. For convenience I have added the "QMC5883LCompass" library into the All and the ESP32 folders, and kept the older "QMC5883L" library for backward compatibility.
It looks like the library for QMC5883LCompass is not included in the libraries folder. There is one in the esp32 folder, but it's for QMC5883L, while source/stable/v2.20.04/AntTrack/Compass.ino includes QMC5883LCompass.h. Is it this one: QMC5883LCompass?