ValueError: not enough values to unpack (expected 4, got 0)

[hjafar]

Dear Lerousseau,

I would like to use your tool using my own training images. The command line is python -m code.training --no-download --source-slides-folder '/home/hussain/Documents/WSI/data/WSI_ki' --save-model-folder '/home/hussain/Documents/WSI/data/WSI_ki/saved_models' throws error massage when extracting labels:
ValueError: not enough values to unpack (expected 4, got 0)

I suspect it needs a label for each input image. However, the documentation has no information how to provide the image labels to the preprocessing or model training steps. Would you please help with this issue?

Best,
Hussain