ModuleNotFoundError: No module named "widgetsnbextension"

[TianlinZhang668]

my os is Ubuntu 17.10
i install syntaxnet by Ubuntu 16.10+ binary installation step by step
when i run python -m jupyter_core.command nbextension enable --py --sys-prefix widgetsnbextension.
it's error.
ModuleNotFoundError: No module named "widgetsnbextension".
i want to know the reason
thank you very much

[tensorflowbutler]

Thank you for your post. We noticed you have not filled out the following field in the issue template. Could you update them if they are relevant in your case, or leave them as N/A? Thanks.
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Exact command to reproduce

[ymodak]

This question is better asked on StackOverflow since it is not a bug or feature request. There is also a larger community that reads questions there.