Plone 文件夹不'；在导航中不显示，编辑时键入错误

最近，我们注意到Plone 3.3.5站点中的一些（已发布）文件夹在导航和文件夹列表视图中不再可见。在尝试设置新的生效日期（设置在过去，所以这不是问题）时，我得到一个关键错误：

Traceback (innermost last):
 Module ZPublisher.Publish, line 125, in publish
 Module Zope2.App.startup, line 238, in commit
 Module transaction._manager, line 96, in commit
 Module transaction._transaction, line 389, in commit
 Module transaction._transaction, line 445, in _callBeforeCommitHooks
 Module collective.indexing.transactions, line 57, in before_commit
 Module collective.indexing.queue, line 149, in process
 Module collective.indexing.indexer, line 89, in unindex
 Module collective.indexing.indexer, line 71, in unindex
 Module Products.CMFSquidTool.queue, line 160, in unindexObject
 Module Products.CMFSquidTool.patch, line 24, in call
 Module Products.Archetypes.CatalogMultiplex, line 49, in unindexObject
 Module Products.CMFPlone.CatalogTool, line 445, in uncatalog_object
 Module Products.CacheSetup.patch, line 109, in uncatalog_object
 Module Products.CacheSetup.patch_utils, line 6, in call
 Module Products.ZCatalog.ZCatalog, line 569, in uncatalog_object
 Module Products.ZCatalog.Catalog, line 390, in uncatalogObject
 Module Products.PluginIndexes.DateRangeIndex.DateRangeIndex, line 192, in unindex_object
 Module Products.PluginIndexes.DateRangeIndex.DateRangeIndex, line 391, in _removeForwardIndexEntry
KeyError: -1666126693

在某些情况下，其他操作也会触发相同的错误

发生这种情况的父文件夹最近被剪切并粘贴到了它在站点中的当前位置，这可能与此有关

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非常感谢您的帮助，谢谢

尝试重建目录，这会有所帮助，目录中似乎有一些孤立对象