jupyterhub-gtk

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-12-c9dd0017b691> in <module>()
----> 1 quarterLithiumMapC10.plot_map_gtk()

/home/mwolf/.ipython/scimap/xrd/map.py in plot_map_gtk(self)
    265 
    266     def plot_map_gtk(self):
--> 267         from xrd.gtkmapwindow import GtkXrdMapWindow
    268         return super().plot_map_gtk(WindowClass=GtkXrdMapWindow)
    269 

/home/mwolf/.ipython/scimap/xrd/gtkmapwindow.py in <module>()
      1 # -*- coding: utf-8 -*-
      2 
----> 3 from mapping.gtkmapwindow import GtkMapWindow
      4 
      5 class GtkXrdMapWindow(GtkMapWindow):

/home/mwolf/.ipython/scimap/mapping/gtkmapwindow.py in <module>()
      9 from gi.repository import Gtk, Gdk
     10 from matplotlib import figure
---> 11 from matplotlib.backends.backend_gtk3agg import FigureCanvasGTK3Agg as FigureCanvas
     12 
     13 from mapping.coordinates import Cube

/usr/lib/python3.5/site-packages/matplotlib/backends/backend_gtk3agg.py in <module>()
      9 
     10 from . import backend_agg
---> 11 from . import backend_gtk3
     12 from .backend_cairo import cairo, HAS_CAIRO_CFFI
     13 from matplotlib.figure import Figure

/usr/lib/python3.5/site-packages/matplotlib/backends/backend_gtk3.py in <module>()
     56 
     57 cursord = {
---> 58     cursors.MOVE          : Gdk.Cursor.new(Gdk.CursorType.FLEUR),
     59     cursors.HAND          : Gdk.Cursor.new(Gdk.CursorType.HAND2),
     60     cursors.POINTER       : Gdk.Cursor.new(Gdk.CursorType.LEFT_PTR),

TypeError: constructor returned NULL