ValueError in dataset transform function

[roybenhayun]

just a minor question..

usually we give the dataset a transform function i.e., ds = Sentinel2(eo_root, transforms=sentinel2_preprocess_image).
the code in the transform function was based on examples and has del sample["bbox"].
I noticed that when this deletion is not included, getting ValueError: A frozen dataclass was passed to apply_to_collection but this is not allowed.

the documentation for transform in dataset says only

a function/transform that takes an input sample and returns a transformed version

could you please clarify why this ValueError is happening and if anything else is required in the transform function?

[adamjstewart]

Can you provide code to reproduce this issue?