Traceback (most recent call last):
  File "/srv/sycamore_base/Sycamore/request.py", line 739, in run
    self.config.page_front_page).page_name, self)
  File "/srv/sycamore_base/Sycamore/wikiaction.py", line 517, in do_diff
    version1))
  File "/srv/sycamore_base/Sycamore/Page.py", line 140, in version_number_to_date
    version_number, self.request.config.wiki_id)] = result[0]
TypeError: 'NoneType' object is unsubscriptable