Traceback (innermost last):
  Module ZPublisher.Publish, line 119, in publish
  Module Zope2.App.startup, line 215, in commit
  Module transaction._manager, line 84, in commit
  Module transaction._transaction, line 381, in commit
  Module transaction._transaction, line 379, in commit
  Module transaction._transaction, line 432, in _commitResources
  Module ZODB.Connection, line 651, in tpc_finish
  Module ZEO.ClientStorage, line 974, in tpc_finish
  Module ZEO.ClientStorage, line 999, in _update_cache
  Module ZEO.cache, line 364, in invalidate
AssertionError