I am using bokeh on the Flask web app. When I update the bokeh version from 1.0.2 to 1.2.0, then it seems that embedding was not working, so all the charts disappeared from the app. Web app is working other than bokeh parts.
Of course, this is my bad, but I spent some time to understand what was happened. Therefore I would appreciate if something error message is thrown (I am not sure if it is feasible).