Hi @hazhuzhu,
Would you mind trying to upgrade your version of Pynq-Metadata to see if it solves the issue. Can you run the following on your board:
python3 -m pip uninstall pynqmetadata
python3 -m pip cache purge
python3 -m pip install pynqmetadata
You might need to reset your board after doing the upgrade just to be sure.
Let me know how you get on!
Thanks,
Shane