AttributeError: 'Polygon' object has no property 'normed'

[cristobal-sifon]

when running corner(chain) I get

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-82-99089eb8bac9> in <module>
----> 1 corner(chain, names=('f_c','a','p_off','R_off'))

/opt/miniconda3/envs/kidsggl/lib/python3.8/site-packages/plottools/statsplots.py in corner(X, config, names, labels, bins, bins1d, clevels, contour_reference, truths, truths_in_1d, truth_color, smooth, likelihood, likesmooth, color_likelihood, colors, cmap, ls1d, ls2d, style1d, medians1d, percentiles1d, background, bweight, bcolor, alpha, limits, show_likelihood_1d, ticks, show_contour, top_labels, pad, h_pad, w_pad, output, verbose, names_kwargs, **kwargs)
    377                     model_lines.append(line)
    378             else:
--> 379                 n, e, patches = ax.hist(
    380                     Xm[i], bins=bins1d[m][i], histtype=histtype,
    381                     color=color1d[m], normed=True)

/opt/miniconda3/envs/kidsggl/lib/python3.8/site-packages/matplotlib/__init__.py in inner(ax, data, *args, **kwargs)
   1436     def inner(ax, *args, data=None, **kwargs):
   1437         if data is None:
-> 1438             return func(ax, *map(sanitize_sequence, args), **kwargs)
   1439 
   1440         bound = new_sig.bind(ax, *args, **kwargs)

/opt/miniconda3/envs/kidsggl/lib/python3.8/site-packages/matplotlib/axes/_axes.py in hist(self, x, bins, range, density, weights, cumulative, bottom, histtype, align, orientation, rwidth, log, color, label, stacked, **kwargs)
   6818             if patch:
   6819                 p = patch[0]
-> 6820                 p.update(kwargs)
   6821                 if lbl is not None:
   6822                     p.set_label(lbl)

/opt/miniconda3/envs/kidsggl/lib/python3.8/site-packages/matplotlib/artist.py in update(self, props)
    994                     func = getattr(self, f"set_{k}", None)
    995                     if not callable(func):
--> 996                         raise AttributeError(f"{type(self).__name__!r} object "
    997                                              f"has no property {k!r}")
    998                     ret.append(func(v))

AttributeError: 'Polygon' object has no property 'normed'

this is with version 0.4.6