Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 19, in <module>
    from gi.repository import Gtk
  File "/usr/lib/python2.7/dist-packages/gi/importer.py", line 76, in load_module
    dynamic_module._load()
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 251, in _load
    overrides_modules = __import__('gi.overrides', fromlist=[self._namespace])
  File "/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py", line 38, in <module>
    class Widget(Gtk.Widget):
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 150, in __getattr__
    interfaces = tuple(interface for interface in get_interfaces_for_object(info)
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 79, in get_interfaces_for_object
    interfaces.append(getattr(module, name))
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 270, in __getattr__
    return getattr(self._introspection_module, name)
  File "/usr/lib/python2.7/dist-packages/gi/module.py", line 176, in __getattr__
    wrapper = metaclass(name, bases, dict_)
  File "/usr/lib/python2.7/dist-packages/gi/types.py", line 230, in __init__
    register_interface_info(cls.__info__.get_g_type())
TypeError: must be an interface