ValueError: Requested tokenizer basic_english, valid choices are a callable that takes a single string as input,

basic_english tokenizer error in PyTorch attention tutorial.

import torchtext
from torchtext.data.utils import get_tokenizer
TEXT = torchtext.data.Field(tokenize=get_tokenizer("basic_english"),
                            init_token='<sos>',
                            eos_token='<eos>',
                            lower=True)

google colab notebook not found

https://github.com/pytorch/tutorials/blob/gh-pages/_downloads/transformer_tutorial.ipynb

Feel free to open up an issue on (pytorch/tutorials](https://github.com/pytorch/tutorials/issues). Could you also post the error messages?

I raised an issue, along with error messages on github.

Can you send me the issue?