Why there are no images displayed, but it says 'Canvas(toolbar=Toolbar(toolitems=[(‘Home’, ‘Reset original view’, ‘home’, ‘home’), (‘Back’, ‘Back to previous …’ each time.
This is a problem with your browser setup. It is blocking the image frames from being displayed.
You may need to disable any pop-up or ad blockers.
Start by clearing your cache, exit your browser, then load the notebook again.