get_data_for_vr_tracker() always return an empty tracker_data

[Colin-KelinLi]

Hi, I am attempting to call the get_data_for_vr_tracker() function in VR but always get empty data.

I confirm that the serial number is correct. The code is: is_valid, trans, rot = s.get_data_for_vr_tracker(TEST_TRACKER_SERIAL_NUM). And results are

This code can render VR and pybullet correctly but cannot get the tracker data.