[Zope] problem authenticating, even with emergency user

[Ben Bartrum]

Hello

A Zope site which is running fine, is refusing all authentication with the error below.   I have tried the emergency user and restarted Zope, but the emergency user gets the same error:


Site Error
An error was encountered while publishing this resource. 
AttributeError
 Sorry, a site error occurred.
Traceback (innermost last): 
 Module ZPublisher.Publish, line 188, in publish_module_standard
 Module Products.PlacelessTranslationService.PatchStringIO, line 51, in new_publish
 Module ZPublisher.Publish, line 145, in publish
 Module Zope2.App.startup, line 222, in zpublisher_exception_hook
 Module ZPublisher.Publish, line 105, in publish
 Module ZPublisher.BaseRequest, line 446, in traverse
 Module ZPublisher.BaseRequest, line 550, in old_validation
AttributeError: __getitem__ (Also, the following error occurred while attempting to render the standard error message, please see the event log for full details: getUserById)

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