content-management-system - デフォルトの Keystone JS の投稿カテゴリ

Question

この 1 週間、Keystone CMS を試してみましたが、投稿カテゴリ セクションで作成したカテゴリで投稿にタグを付けると、次のエラーが発生することに気付きました。

TypeError: Object #<Object> has no method 'each'
  at Promise.<anonymous> (/Users/clippetmac/Sites/keystone/routes/views/blog.js:31:10)
  at Promise.<anonymous> (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:177:8)
  at Promise.emit (events.js:95:17)
  at Promise.emit (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:84:38)
  at Promise.fulfill (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:97:20)
  at Promise.resolve (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/lib/promise.js:108:23)
  at Promise.<anonymous> (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:177:8)
  at Promise.emit (events.js:95:17)
  at Promise.emit (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:84:38)
  at Promise.fulfill (/Use rs/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mpromise/lib/promise.js:97:20)
  at /Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/lib/query.js:1052:26
  at model.Document.init (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/lib/document.js:250:11)
  at completeMany (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/lib/query.js:1050:12)
  at Object.cb (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/lib/query.js:1016:11)
  at Object._onImmediate (/Users/clippetmac/Sites/keystone/node_modules/keystone/node_modules/mongoose/node_modules/mquery/lib/utils.js:137:16)
  at processImmediate [as _immediateCallback] (timers.js:336:15)

理由はありますか？