DatasetFormatter().from_toplosses --> RuntimeError: received 0 items of ancdata

fastai
1

Hi,

I am trying to use ImageCleaner in order to remove some images that are clearly artifacts in my dataset. However, when I run:
ds, idxs = DatasetFormatter().from_toplosses(learn_cln)

I got RuntimeError: received 0 items of ancdata

I found this thread where the problem is solved increasing the rlimit. However, I cannot solve the issue even increasing the number to 4096.

Any ideas?
Thanks!