raise ValueError 'need at least one array to stack about yolov3

[glenn-jocher]

No values read, yes. You probably get this error because the path to your training data is incorrect, so it finds no images to load.

[bibhabasumohapatra]

it may also mean that you don't have numerical fields rather categorical values. that is to say that you might have not read empty data but got the Error.

[glenn-jocher]

@bibhabasumohapatra the error "ValueError: need at least one array to stack" typically indicates an issue with loading the training data as arrays. It's unrelated to having categorical values. Please ensure that the path to your data is correct and that the images are being loaded properly. If you have more specific details about your setup, feel free to share them for further assistance.