https://bugzilla.wikimedia.org/show_bug.cgi?id=55149
--- Comment #7 from Kunal Mehta (Legoktm) legoktm.wikipedia@gmail.com --- This error looks like you haven't made a DataPage.get() before you tried to update the page. In this cas the title is None as shown. If you recreate the datapage with the entity id you make a explicit get call to retrieve the items data. But this will be enough to get the data's id i.e. the DataPage.title().