"IndexError: list index out of range" when run datasets.COCO()

[Tommy in Tongji]

I have made a bbox detection coco label my hand. label_B.json is this:

when run datasets.COCO('label_B.json'), it gets this error:

[Tommy in Tongji]

My own custom dataset and class

[Rvv1296]

Hello,
I am also facing the same issue.
Does any one able to solve this error ?

[Jamessmith9956]

I'm facing the same issue due to an empty segmentation list, for some reason installing Pull/31 hasn't fixed it, even though it shouldn't reach line 90.

ground truth json for custom dataset:

code + error:

updated functions.py from pull request 31: