Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/pyanaconda/ui/gui/hubs/__init__.py", line 308, in _update_spokes
    self._updateCompleteness(spoke)
  File "/usr/lib64/python3.6/site-packages/pyanaconda/ui/gui/hubs/__init__.py", line 223, in _updateCompleteness
    spoke.selector.set_incomplete(not spoke.completed and spoke.mandatory)
TypeError: Argument 1 does not allow None as a value
