Isaac sim location information shows NaN

After importing the usd model, 1. Open the Articulation Inspector through Isaac Utils > Workflows > Articulation Inspector and press Play button
DOF Types [1,1,1,1, 1, 1, 1, 1, 1, 1, 1, 1]
Positions [nan, nan, nan,nan,nan,nan,nan, nan, nan, nan, nan, nan]
Velocities [nan,nan,nan,nan,nan,nan,nan, nan, nan, nan, nan, nan]
Efforts [nan,nan,nan,nan,nan,nan,nan,nan,nan, nan, nan, nan]

reference linking: 5.7. Adding a New Manipulator — Omniverse IsaacSim latest documentation

@hiteam_yangyan i recall there was another user who found himself in a similar situation:

is this the same case you on your end? could you also clarify the Isaac Sim version you are using?

isaac sim 2023.1.1