setup_text_plots(fontsize=8, usetex=True)

Traceback (most recent call last):
File "example.py", line 19, in <module>
setup_text_plots(fontsize=8, usetex=True)
File "/home/apoorve/.local/lib/python2.7/site-packages/astroML/plotting   /settings.py", line 17, in setup_text_plots
matplotlib.rc('patch', force_edgecolor=True)
File "/usr/lib/python2.7/dist-packages/matplotlib/__init__.py", line 1234, in rc
'name "%s"') % (key, g, name))
KeyError: u'Unrecognized key "patch.force_edgecolor" for group "patch" and name "force_edgecolor"'