used to work with bokeh < 3.0, however both no longer exist in the API in the latest release. Usage is as in bokeh.models.widgets.panels — Bokeh 1.0.2 documentation. What would be the new way of creating tabs and panels?
This import had been deprecated for a few years and removed in bokeh 3.0. The renaming of Panel to TabPanel wasn’t communicated beforehand though via a deprecation.