Traceback (most recent call last):
  File "/usr/share/anki/ankiqt/ui/getshared.py", line 166, in accept
    if not self.parent.saveAndClose(hideWelcome=True, parent=self):
  File "/usr/share/anki/ankiqt/ui/main.py", line 859, in saveAndClose
    self.deck.rollback()
  File "/usr/share/anki/anki/deck.py", line 2230, in rollback
    self.s.clear()
  File "/usr/share/anki/anki/hooks.py", line 59, in repl
    return old(*args, **kwargs)
  File "/usr/share/anki/anki/db.py", line 74, in __getattr__
    return getattr(self.__dict__['_session'], k)
AttributeError: 'Session' object has no attribute 'clear'