run demo.py but got： if 'img' in data['inputs']: TypeError: 'NoneType' object is not subscriptable

[jiachen0212]

Prerequisite

• [X] I have searched Issues and Discussions but cannot get the expected help.
• [X] I have read the FAQ documentation but cannot get the expected help.
• [X] The bug has not been fixed in the latest version (dev-1.x) or latest version (dev-1.0).

Task

I'm using the official example scripts/configs for the officially supported tasks/models/datasets.

Branch

main branch https://github.com/open-mmlab/mmdetection3d

Environment

python demo/demo.py

Reproduces the problem - code sample

if 'img' in data['inputs']:

TypeError: 'NoneType' object is not subscriptable

Reproduces the problem - command or script

run dem.py but get： if 'img' in data['inputs']: TypeError: 'NoneType' object is not subscriptable ???

Reproduces the problem - error message

run dem.py but get： if 'img' in data['inputs']: TypeError: 'NoneType' object is not subscriptable ???

Additional information

run dem.py but get： if 'img' in data['inputs']: TypeError: 'NoneType' object is not subscriptable ???