Module ZPublisherEventsBackport.patch, line 77, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 42, in call_object
  Module plone.z3cform.layout, line 56, in __call__
  Module plone.z3cform.layout, line 50, in update
  Module hc.directives.form.actionform, line 103, in update
  Module plone.dexterity.browser.edit, line 32, in update
  Module plone.z3cform.fieldsets.extensible, line 59, in update
  Module z3c.form.group, line 138, in update
  Module z3c.form.action, line 99, in execute
  Module z3c.form.button, line 311, in __call__
  Module z3c.form.button, line 170, in __call__
  Module decorator, line 49, in __call__
  Module hc.progression.questionfeedback.questionfeedback, line 176, in finishQuizHandler
  Module zope.event, line 23, in notify
  Module zope.component.event, line 26, in dispatch
  Module zope.component._api, line 131, in subscribers
  Module zope.component.registry, line 300, in subscribers
  Module zope.interface.adapter, line 535, in subscribers
  Module hc.logevents.core.handlers, line 24, in examCompleted
  Module hc.logevents.core.handlers, line 19, in examEvent
  Module hc.am.base.content.member, line 82, in enterRecord
  Module hc.am.base.utilities, line 801, in logHistory
KeyError: 'site_id'