Event matching query does not exist

Sorry to bother, is there anything I should have initialized and forgot? Is this a fatal error?

Traceback (most recent call last):
File "./../../patchwork/bin/parsemail.py", line 890, in
sys.exit(main(sys.argv))
File "./../../patchwork/bin/parsemail.py", line 878, in main
return parse_mail(mail)
File "./../../patchwork/bin/parsemail.py", line 796, in parse_mail
revision.add_patch(patch, content.patch_order)
File "/usr/home/patchwork/patchwork/patchwork/models.py", line 620, in add_patch
series_revision_complete.send(sender=self.**class**, revision=self)
File "/usr/local/lib/python2.7/site-packages/django/dispatch/dispatcher.py", line 189, in send
response = receiver(signal=self, sender=sender, *_named)
File "/usr/home/patchwork/patchwork/patchwork/models.py", line 859, in _on_revision_complete
new_revision = Event.objects.get(name='series-new-revision')
File "/usr/local/lib/python2.7/site-packages/django/db/models/manager.py", line 127, in manager_method
return getattr(self.get_queryset(), name)(_args, **kwargs)
File "/usr/local/lib/python2.7/site-packages/django/db/models/query.py", line 334, in get
self.model._meta.object_name
patchwork.models.DoesNotExist: Event matching query does not exist.