chapter 5 transformer.ipynb not able to reproduce

[ayusdixit]

Was reproducing the code on Colab but got the following error :
->tr_iter = PennTreebank(split='train')
tkzer = get_tokenizer('basic_english')

done pip install portalocker

then got the following error:

Is there dependency issue here?

[jonbirge]

I get same issue. I think torchtext is pretty much abandoned at this point and it's going to be hard to get this to work. What I don't understand is how this can break even when loading the old versions of everything.

[JuanVargas]

I ran into the same problem. Can anyone suggest other source of text we could use to make this work???