@pengPeterpeng I tried running the conftest.py file but getting the following error **Traceback (most recent call last): File "conftest.py", line 16, in <module> @pytest.helpers.register AttributeError: module 'pytest' has no attribute 'helpers'** Were you able to resolve this error? _Originally posted by @Rishab9991 in https://github.com/erikwijmans/Pointnet2_PyTorch/issues/126#issuecomment-888131111_