ValueError: ClassSelector parameter None value must be an instance of (function, tuple), not <function size at ###>

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ALL software version info

(this library, plus any other relevant software, e.g. bokeh, python, notebook, OS, browser, etc) hvplot == 0.7.3 holoviews = 1.14.9 bokeh == 2.4.3 python == 3.11

Description of expected behavior and the observed behavior

Cannot import hvplot

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

import hvplot

Stack traceback and/or browser JavaScript console output

ValueError                                Traceback (most recent call last)
Cell In[16], line 2
      1 from autoviz import AutoViz_Class
----> 2 import hvplot.pandas
      3 import numpy as np
      4 np.bool = bool

File ~\Python\venvs\eda311\Lib\site-packages\hvplot\__init__.py:12
      8 import holoviews as _hv
     10 from holoviews import Store
---> 12 from .converter import HoloViewsConverter
     13 from .util import get_ipy
     14 from .utilities import save, show # noqa

File ~\Python\venvs\eda311\Lib\site-packages\hvplot\converter.py:25
     18 from holoviews.core.util import max_range, basestring
     19 from holoviews.element import (
     20     Curve, Scatter, Area, Bars, BoxWhisker, Dataset, Distribution,
     21     Table, HeatMap, Image, HexTiles, QuadMesh, Bivariate, Histogram,
     22     Violin, Contours, Polygons, Points, Path, Labels, RGB, ErrorBars,
     23     VectorField, Rectangles, Segments
     24 )
---> 25 from holoviews.plotting.bokeh import OverlayPlot, colormap_generator
     26 from holoviews.plotting.util import process_cmap
     27 from holoviews.operation import histogram

File ~\Python\venvs\eda311\Lib\site-packages\holoviews\plotting\bokeh\__init__.py:40
     38 from .graphs import GraphPlot, NodePlot, TriMeshPlot, ChordPlot
     39 from .heatmap import HeatMapPlot, RadialHeatMapPlot
---> 40 from .hex_tiles import HexTilesPlot
     41 from .path import PathPlot, PolygonPlot, ContourPlot
     42 from .plot import GridPlot, LayoutPlot, AdjointLayoutPlot

File ~\Python\venvs\eda311\Lib\site-packages\holoviews\plotting\bokeh\hex_tiles.py:22
     18 from .selection import BokehOverlaySelectionDisplay
     19 from .styles import base_properties, line_properties, fill_properties
---> 22 class hex_binning(Operation):
     23     """
     24     Applies hex binning by computing aggregates on a hexagonal grid.
     25 
     26     Should not be user facing as the returned element is not directly
     27     useable.
     28     """
     30     aggregator = param.ClassSelector(
     31         default=np.size, class_=(types.FunctionType, tuple), doc="""
     32       Aggregation function or dimension transform used to compute bin
     33       values. Defaults to np.size to count the number of values
     34       in each bin.""")

File ~\Python\venvs\eda311\Lib\site-packages\holoviews\plotting\bokeh\hex_tiles.py:30, in hex_binning()
     22 class hex_binning(Operation):
     23     """
     24     Applies hex binning by computing aggregates on a hexagonal grid.
     25 
     26     Should not be user facing as the returned element is not directly
     27     useable.
     28     """
---> 30     aggregator = param.ClassSelector(
     31         default=np.size, class_=(types.FunctionType, tuple), doc="""
     32       Aggregation function or dimension transform used to compute bin
     33       values. Defaults to np.size to count the number of values
     34       in each bin.""")
     36     gridsize = param.ClassSelector(default=50, class_=(int, tuple))
     38     invert_axes = param.Boolean(default=False)

File ~\Python\venvs\eda311\Lib\site-packages\param\__init__.py:1367, in ClassSelector.__init__(self, class_, default, instantiate, is_instance, **params)
   1365 self.is_instance = is_instance
   1366 super(ClassSelector,self).__init__(default=default,instantiate=instantiate,**params)
-> 1367 self._validate(default)

File ~\Python\venvs\eda311\Lib\site-packages\param\__init__.py:1371, in ClassSelector._validate(self, val)
   1369 def _validate(self, val):
   1370     super(ClassSelector, self)._validate(val)
-> 1371     self._validate_class_(val, self.class_, self.is_instance)

File ~\Python\venvs\eda311\Lib\site-packages\param\__init__.py:1383, in ClassSelector._validate_class_(self, val, class_, is_instance)
   1381 if is_instance:
   1382     if not (isinstance(val, class_)):
-> 1383         raise ValueError(
   1384             "%s parameter %r value must be an instance of %s, not %r." %
   1385             (param_cls, self.name, class_name, val))
   1386 else:
   1387     if not (issubclass(val, class_)):

ValueError: ClassSelector parameter None value must be an instance of (function, tuple), not <function size at 0x0000020F5A342CB0>.

Screenshots or screencasts of the bug in action

[ ] I may be interested in making a pull request to address this

holoviz / hvplot