Traceback (most recent call last):
  File "./rtlsdr_scan.py", line 129, in <module>
    frame = FrameMain(APP_NAME)
  File "/usr/share/rtlsdr-scanner/main_window.py", line 177, in __init__
    self.__create_toolbars()
  File "/usr/share/rtlsdr-scanner/main_window.py", line 201, in __create_toolbars
    self.remoteControl)
  File "/usr/share/rtlsdr-scanner/panels.py", line 114, in __init__
    self.create_plot()
  File "/usr/share/rtlsdr-scanner/panels.py", line 297, in create_plot
    self.plot = Plotter(self.notify, self.figure, self.settings)
  File "/usr/share/rtlsdr-scanner/plot_line.py", line 67, in __init__
    self.__setup_plot()
  File "/usr/share/rtlsdr-scanner/plot_line.py", line 76, in __setup_plot
    axisbg=self.settings.background)
  File "/usr/lib/python2.7/dist-packages/matplotlib/figure.py", line 1239, in add_subplot
    a = subplot_class_factory(projection_class)(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/matplotlib/axes/_subplots.py", line 77, in __init__
    self._axes_class.__init__(self, fig, self.figbox, **kwargs)
  File "/usr/lib/python2.7/dist-packages/matplotlib/axes/_base.py", line 539, in __init__
    self.update(kwargs)
  File "/usr/lib/python2.7/dist-packages/matplotlib/artist.py", line 888, in update
    for k, v in props.items()]
  File "/usr/lib/python2.7/dist-packages/matplotlib/artist.py", line 881, in _update_property
    raise AttributeError('Unknown property %s' % k)
AttributeError: Unknown property axisbg