Es ist leider ein Fehler aufgetreten

Traceback (innermost last):
  Module ZPublisher.WSGIPublisher, line 162, in transaction_pubevents
  Module ZPublisher.WSGIPublisher, line 371, in publish_module
  Module ZPublisher.WSGIPublisher, line 266, in publish
  Module ZPublisher.mapply, line 85, in mapply
  Module ZPublisher.WSGIPublisher, line 63, in call_object
  Module ploneintranet.workspace.basecontent.baseviews, line 193, in __call__
  Module zope.browserpage.simpleviewclass, line 41, in __call__
  Module Products.Five.browser.pagetemplatefile, line 126, in __call__
  Module Products.Five.browser.pagetemplatefile, line 58, in __call__
  Module zope.pagetemplate.pagetemplate, line 133, in pt_render
  Module Products.PageTemplates.engine, line 378, in __call__
  Module z3c.pt.pagetemplate, line 176, in render
  Module chameleon.zpt.template, line 302, in render
  Module chameleon.template, line 214, in render
  Module chameleon.utils, line 53, in raise_with_traceback
  Module chameleon.template, line 192, in render
  Module 2ae88f692921f31e0a9bd5ff9d187ced, line 1147, in render
  Module 9dc778e0b5a44469013ad51f11ecab10, line 864, in render_master
  Module 2ae88f692921f31e0a9bd5ff9d187ced, line 583, in __fill_content
  Module zope.tales.expressions, line 250, in __call__
  Module Products.PageTemplates.Expressions, line 188, in _eval
  Module zope.tales.expressions, line 153, in _eval
  Module Products.PageTemplates.Expressions, line 102, in trustedBoboAwareZopeTraverse
  Module OFS.Traversable, line 343, in unrestrictedTraverse
   - __traceback_info__: ([], '@@delete-link')
  Module OFS.Traversable, line 240, in unrestrictedTraverse
   - __traceback_info__: ([], '@@delete-link')
AttributeError: @@delete-link

 - Expression: "provider:plone.abovecontent"
 - Filename:   ... egg/Products/CMFPlone/browser/templates/main_template.pt
 - Location:   (line 67: col 59)
 - Source:     ...
                                       ^
 - Expression: "context/main_template/macros/master"
 - Filename:   ... neintranet/workspace/basecontent/templates/event_view.pt
 - Location:   (line 6: col 23)
 - Source:     ... etal:use-macro="context/main_template/macros/master"
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 - Arguments:  template: 
               options: {}
               args: ()
               nothing: None
               modules: 
               request: 
               view: 
               context: 
               views: 
               here: 
               container: 
               root: 
               traverse_subpath: []
               user: 
               default: 
               repeat: 
               loop: {}
               target_language: None
               translate: .translate at 0x7f4f1644aa60>
               macroname: 'master'
               attrs: {}