Getting this message when running a loop with tnrange:

for i in tnrange(10):
    print(i)

Failed to display Jupyter Widget of type HBox.
If you're reading this message in Jupyter Notebook or JupyterLab, it may mean that the widgets JavaScript is still loading. If this message persists, it likely means that the widgets JavaScript library is either not installed or not enabled. See the Jupyter Widgets Documentation for setup instructions.
If you're reading this message in another notebook frontend (for example, a static rendering on GitHub or NBViewer), it may mean that your frontend doesn't currently support widgets.

Was working fine yesterday, not even sure what is different today. Here is the same issue mentioned in bstriner/keras-tqdm#18.

MacOS X 10.13
Chrome 61.0.3163.100
Python 3.6.2 (virtualenv)
Jupyter 4.3.0
ipython 6.2.0
ipykernel 4.6.1
ipywidgets 7.0.1
widgetsnbextension 3.0.3
tqdm 4.17.1