Error on tutorials page pytorch_tutorial - wrong output at last code

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The page /tutorials/beginner/nlp/pytorch_tutorial.html contains an error:
the code at the bottom, that including

[...]
print(var_z.grad_fn)
[...]
# ... does new_var_z have information to backprop to x and y?
# NO!
print(new_var_z.grad_fn)

is stated to have output “None \n None”

It should be instead

<torch.autograd.function.AddBackward object at 0x7f758cd01234>
None

EDIT: also publshed an issue on github, I am not sure which is the right place.