_pickle.UnpicklingError: invalid load key, 'v'.

[hsliuustc]

   with open(self.data_dir.parent / 'train_max_min.pkl', 'rb') as f:
        self.normalization_factors = pickle.load(f)

the above lines cannot successfully load the data

[mshaocong]

Hello @hsliuustc ! I met the same problem and it is because this file is saved in a compressed format. You need to use Git Large File Storage (LFS) to clone this repo. See this https://git-lfs.github.com/