TypeError: cannot unpack non-iterable NoneType object when loading roberta.large from Fairseq Hub

[samvel-karapetyan]

I'm trying to load the roberta.large model using torch.hub from the Fairseq repository, but I encounter the following error:

TypeError: cannot unpack non-iterable NoneType object

I have tried different environments, including Google Colab, but the error persists. Here's the code snippet causing the issue:

Steps to reproduce the behavior (always include the command you ran):

import torch
roberta = torch.hub.load('pytorch/fairseq', 'roberta.large')
roberta.eval()  # disable dropout (or leave in train mode to finetune)