Traceback (innermost last):
  Module ZPublisher.Publish, line 121, in publish
  Module Zope2.App.startup, line 240, in commit
  Module transaction._manager, line 96, in commit
  Module transaction._transaction, line 380, in commit
  Module transaction._transaction, line 378, in commit
  Module transaction._transaction, line 441, in _commitResources
  Module ZODB.Connection, line 679, in tpc_finish
  Module ZEO.ClientStorage, line 974, in tpc_finish
  Module ZEO.ClientStorage, line 999, in _update_cache
  Module ZEO.cache, line 367, in invalidate
AssertionError