[Python] AttributeError: 'list' object has no attribute 'to' (samples are actually a Tensor)

While working on a SSL model, before start training the first epochs I got the following Error:

samples = samples.to(device, non_blocking=True)
^^^^^^^^^^
AttributeError: 'list' object has no attribute 'to'


However, after starting debugging I realized that the object is a list of Tensors as depicted in the following image:



As far as I know usually this problem raises when the object is not a Tensor, but at least the list I'm trying to train is a tensor.

EDIT:

Python indicates that my samples is a list of Tensors, not just a list.

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