Hello Adrian,
As evident from the example you gave, the image has a valid bounding box [1407,101.500000000000,179,979] but the blank brackets “[]” are responsible for producing the error.
One way would be to remove the empty brackets.
Also make sure that each sample (image) has at-least one bounding box (this means it has at-least one object in the image that can be used for training/testing).
If an image is having multiple bounding boxes, then they should be represented as [bbx1; bbx2; bbx3; …] as represented in the example Object Detection using YOLO v3 Deep Learning. You may try the example with your dataset and see if it still gives empty bracket like “[] [] [] [1407,101.500000000000,179,979] []”.
