Fatal Python error: init_sys_streams: <stdin> is a directory, cannot continue

[WangPu1999]

Problem metioned above occurs when I input preprocess_PeopleSnapshot.py --root </mnt/sda/wangpu/projects/datasets/people_snapshot_public> --subject male-3-casual in the teminal.

The detail is

(instant) wangpu@ubuntu:/mnt/sda/wangpu/projects/InstantAvatar/scripts/peoplesnapshot$ preprocess_PeopleSnapshot.py --root </mnt/sda/wangpu/projects/datasets/people_snapshot_public> --subject male-3-casual
Fatal Python error: init_sys_streams: <stdin> is a directory, cannot continue
Python runtime state: core initialized

Current thread 0x00007f4e4e013740 (most recent call first):
<no Python frame>

I don‘t know why it occurs🥲.