Here it is a mismatch between the loaded BokehJS and the version
I am using conda to up/down grade my Bokeh.
GeoPandas>conda install -c conda-forge bokeh==2.1.0 Collecting package metadata (current_repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Collecting package metadata (repodata.json): done Solving environment: done ==> WARNING: A newer version of conda exists. <== current version: 4.8.3 latest version: 4.9.1 Please update conda by running $ conda update -n base -c defaults conda ## Package Plan ## environment location: /Users/roberto/opt/anaconda3/envs/ox added / updated specs: - bokeh==2.1.0 The following packages will be DOWNGRADED: bokeh 2.2.0-py38h32f6830_0 --> 2.1.0-py38h32f6830_0 Proceed ([y]/n)? y Preparing transaction: done Verifying transaction: done Executing transaction: done