Error In finetuning layoutlmv3 object detection

[vikhil0609]

I am using layoutlmv3 for Finetuning the Text , Title, Table, List, Figure from the pdf pages converted to Images. I am using Label-studio to make the dataset and exported the dataset as coco-format, But when I tried to start the training I am getting this error

AttributeError: Cannot find field 'gt_masks' in the given Instances! .

Can anyone help ? thank you