[Neuroimaging] PySurfer: RuntimeError: No pyface.toolkits plugin could be loaded for qt4

[Matthieu Vanhoutte]

Dear experts,

I tried to install PySurfer according guidelines on an OS X. However, when trying to launch a simple test with plot_basics.py, I got the following error message:

Traceback (most recent call last):
  File "plot_basics.py", line 8, in <module>
    from surfer import Brain
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/surfer/__init__.py", line 1, in <module>
    from .viz import Brain, TimeViewer  # noqa
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/surfer/viz.py", line 13, in <module>
    from mayavi import mlab
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/mayavi/mlab.py", line 15, in <module>
    from mayavi.core.common import process_ui_events
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/mayavi/core/common.py", line 21, in <module>
    from pyface import api as pyface
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/pyface/api.py", line 17, in <module>
    from .about_dialog import AboutDialog
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/pyface/about_dialog.py", line 19, in <module>
    from .toolkit import toolkit_object
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/pyface/toolkit.py", line 27, in <module>
    toolkit = toolkit_object = find_toolkit('pyface.toolkits')
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/pyface/base_toolkit.py", line 263, in find_toolkit
    return import_toolkit(ETSConfig.toolkit, entry_point)
  File "/Users/mattvan83/anaconda/envs/PySurf/lib/python3.7/site-packages/pyface/base_toolkit.py", line 227, in import_toolkit
    raise RuntimeError(msg)
RuntimeError: No pyface.toolkits plugin could be loaded for qt4

Could you help me about this error, I couldn’t find anything resolved on the web?

Best,
Matthieu
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