KeyError: 'label' monai/apps/auto3dseg/data_analyzer.py #5427
Description
Describe the bug
running python -m monai.apps.auto3dseg DataAnalyzer get_all_case_stats with --label_key=None
there's a KeyError: 'label' with this line:
MONAI/monai/apps/auto3dseg/data_analyzer.py
Line 265 in 6e77d57
would be great to have test cases for label_key=None
cc @mingxin-zheng do you have time for this?