AttributeError: 'str' object has no attribute 'dataspecs'

[elarroba]

ALL software version info

bokeh 2.3.0
holoviews 1.14.1
jupyterlab 3.0.9
notebook 6.2.0

Description of expected behavior and the observed behavior

The expected behavior is for jupyter notebook to show the plot.
Same error occurs with different kind of plots.

Complete, minimal, self-contained example code that reproduces the issue

import holoviews as hv
hv.extension('bokeh')
data = [('one',8),('two', 10), ('three', 16), ('four', 8), ('five', 4), ('six', 1)]
bars = hv.Bars(data, hv.Dimension('Car occupants'), 'Count')

bars

Stack traceback and/or browser JavaScript console output

Traceback (most recent call last):

File "c:\users\migue.virtualenvs\hv-test-8p3rpe1k\lib\site-packages\holoviews\plotting\bokeh\element.py", line 1359, in _init_glyphs
self._update_glyph(renderer, properties, mapping, glyph, source, source.data)

File "c:\users\migue.virtualenvs\hv-test-8p3rpe1k\lib\site-packages\holoviews\plotting\bokeh\element.py", line 1252, in _update_glyph
dataspecs = glyph.dataspecs()

AttributeError: 'str' object has no attribute 'dataspecs'

Screenshots or screencasts of the bug in action

[philippjfr]

See #4845 and #4846. We'll release a new HoloViews with compatibility for Bokeh 2.3 in the coming days for now downgrade bokeh to 2.2.3.

[github-actions]

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