Traceback (most recent call last):
  File "/Users/Apollo/PycharmProjects/CT_registration/main.py", line 114, in <module>
    moving_npa=fixed(sitk.GetArrayViewFromImage(movingImage)))
  File "/Users/Apollo/venv/lib/python2.7/site-packages/ipywidgets/widgets/interaction.py", line 531, in __call__
    show_inline_matplotlib_plots()
  File "/Users/Apollo/venv/lib/python2.7/site-packages/ipywidgets/widgets/interaction.py", line 52, in show_inline_matplotlib_plots
    from ipykernel.pylab.backend_inline import flush_figures
  File "/Users/Apollo/venv/lib/python2.7/site-packages/ipykernel/pylab/backend_inline.py", line 9, in <module>
    from matplotlib.backends.backend_agg import new_figure_manager, FigureCanvasAgg # analysis: ignore
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/backends/backend_agg.py", line 32, in <module>
    from matplotlib.backend_bases import (
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/backend_bases.py", line 53, in <module>
    from matplotlib import (
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/textpath.py", line 17, in <module>
    import matplotlib.font_manager as font_manager
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/font_manager.py", line 1469, in <module>
    _rebuild()
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/font_manager.py", line 1450, in _rebuild
    fontManager = FontManager()
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/font_manager.py", line 1086, in __init__
    self.ttflist = createFontList(self.ttffiles)
  File "/Users/Apollo/venv/lib/python2.7/site-packages/matplotlib/font_manager.py", line 587, in createFontList
    font = ft2font.FT2Font(fpath)
TypeError: First argument must be a path or file object reading bytes

Process finished with exit code 1