log() got an unexpected keyword argument 'error'
This Error Reference applies to:
Any version.
This Error Reference is intended for:
Any audience.
The problem is fixed in Zope 2.9.5.
If Zope 2.9.5 or later has not been released by the time you read this, you need to run Zope from the SVN version.
If you want more details on the error, consult the Zope bug report on this.
Hack it yourself...