report error of storage_p.buffer.targets function

[Amos58]

I am reproduce code from https://avalanche.continualai.org/how-tos/dataloading_buffers_replay. When I run "storage_p.buffer.targets", it shows that

And here is the whole code :

my avalanche version is 0.3.1

[AntonioCarta]

This looks fixed in the latest version (0.5.0).