Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/menulibre/MenuEditor.py", line 51, in on_icon_theme_changed
    row[4] = load_icon(row[3], 48)
  File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 1046, in __setitem__
    self.model.set_value(self.iter, key, value)
  File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 1190, in set_value
    value = self._convert_value(column, value)
  File "/usr/lib/python3/dist-packages/gi/overrides/Gtk.py", line 830, in _convert_value
    return GObject.Value(self.get_column_type(column), value)
  File "/usr/lib/python3/dist-packages/gi/overrides/GObject.py", line 213, in __init__
    self.set_value(py_value)
  File "/usr/lib/python3/dist-packages/gi/overrides/GObject.py", line 266, in set_value
    (py_value, type(py_value)))
ValueError: Expected string but got <Pixbuf object at 0xaf7f734c (GdkPixbuf at 0xa6c0d00)><class 'gi.repository.GdkPixbuf.Pixbuf'>