Question about Bokehjs missing error

I am running Anaconda 10.0, Jupyter Notebook,. Python 3.8, bokeh 2.3.0 on Chrome. On my other PC images are fine, but on this there is no image and the Javascript console tells me:

Bokeh: ERROR: Unable to run BokehJS code because BokehJS library is missing

I could not find a simple, working solution to this problem here or elsewhere on the net and I am at a total loss.

The abbreviated code I’m running is:

import regex as rg
import pandas as pd
import numpy as np

import datashader as ds, colorcet
import holoviews as hv
from holoviews.operation.datashader import datashade
from holoviews import opts

datashade(hv.Points(df_re),‘Reflectances’).opts(height=700, width=800)

Where is the problem and how should I fix it? Thank you, any help is appreciated!