Trouble when installing

[ArturoVelasquez]

when I run this command in my terminal:

jupyter nbextension enable --py --sys-prefix gmaps

From the installation tutorial , I get this error.

AttributeError: module 'ipywidgets.widgets.trait_types' has no attribute 'InstanceDict'

I am not able to see any maps in jupyter notebook, it shows this message:

A Jupyter widget could not be displayed because the widget state could not be found. This could happen if the kernel storing the widget is no longer available, or if the widget state was not saved in the notebook. You may be able to create the widget by running the appropriate cells.