an error about "coco evaluate"

[HerongWang]

when i use the command "sahi coco evaluate --dataset_json_path test.json --result_json_path result.json --type segm"
i have got this error:
loading annotations into memory...
Done (t=0.02s)
creating index...
index created!

Evaluating segm...
/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/sahi/scripts/coco_evaluation.py:141: UserWarning: The key "bbox" is deleted for more accurate mask AP of small/medium/large instances since v2.12.0. This does not change the overall mAP calculation.
warnings.warn(
Loading and preparing results...
Traceback (most recent call last):
File "/home/grade2022/wangherong/anaconda_envs/detectron2/bin/sahi", line 8, in
sys.exit(app())
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/sahi/cli.py", line 24, in app
fire.Fire(sahi_app)
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/fire/core.py", line 141, in Fire
component_trace = _Fire(component, args, parsed_flag_args, context, name)
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/fire/core.py", line 466, in _Fire
component, remaining_args = _CallAndUpdateTrace(
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/fire/core.py", line 681, in _CallAndUpdateTrace
component = fn(*varargs, **kwargs)
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/sahi/scripts/coco_evaluation.py", line 379, in evaluate
result = evaluate_core(
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/sahi/scripts/coco_evaluation.py", line 147, in evaluate_core
cocoDt = cocoGt.loadRes(results)
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/pycocotools/coco.py", line 348, in loadRes
ann['area'] = maskUtils.area(ann['segmentation'])
File "/home/grade2022/wangherong/anaconda_envs/detectron2/lib/python3.8/site-packages/pycocotools/mask.py", line 95, in area
return _mask.area(rleObjs)
File "pycocotools/_mask.pyx", line 160, in pycocotools._mask.area
File "pycocotools/_mask.pyx", line 127, in pycocotools._mask._frString
TypeError: list indices must be integers or slices, not str

how can i solve this error?

[fcakyon]

Can you send a sample annotation and result file? There may be an issue with your json fields.

[fcakyon]

@HerongWang can you at least post what your one of ann['segmentation'] look like?

[HerongWang]

this is my annotation.
annotation.zip
thanks.

[fcakyon]

@HerongWang this should be fixed in main branch. Can you try and confirm?

Update sahi by pip install -U git+https://github.com/obss/sahi.git.

Please, try again and report back if the error is fixed :)

[fcakyon]

Should be fixed with sahi==0.11.1

[HerongWang]

this fixed my error, thanks a lot!