error

[Sat Nov 11 2017 19:20:44 GMT+0530 (IST)] ERROR TypeError: Cannot read property 'title' of undefined
    at Function.formatTitle (/home/mastcoder/metabrainz/bookbrainz-site/lib/client/components/pages/revision.js:182:27)
    at RevisionPage.render (/home/mastcoder/metabrainz/bookbrainz-site/lib/client/components/pages/revision.js:250:35)
    at /home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:793:21
    at measureLifeCyclePerf (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:73:12)
    at ReactCompositeComponentWrapper._renderValidatedComponentWithoutOwnerOrContext (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:792:25)
    at ReactCompositeComponentWrapper._renderValidatedComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:819:32)
    at ReactCompositeComponentWrapper.performInitialMount (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:359:30)
    at ReactCompositeComponentWrapper.mountComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactCompositeComponent.js:255:21)
    at Object.mountComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactReconciler.js:43:35)
    at ReactDOMComponent.mountChildren (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactMultiChild.js:234:44)
    at ReactDOMComponent._createContentMarkup (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactDOMComponent.js:657:32)
    at ReactDOMComponent.mountComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactDOMComponent.js:524:29)
    at Object.mountComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactReconciler.js:43:35)
    at ReactDOMComponent.mountChildren (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactMultiChild.js:234:44)
    at ReactDOMComponent._createContentMarkup (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactDOMComponent.js:657:32)
    at ReactDOMComponent.mountComponent (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/react-dom/lib/ReactDOMComponent.js:524:29)
From previous event:
    at router.get (/home/mastcoder/metabrainz/bookbrainz-site/lib/server/routes/revision.js:237:21)
    at Layer.handle [as handle_request] (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/layer.js:95:5)
    at next (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/route.js:137:13)
    at Route.dispatch (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/layer.js:95:5)
    at /home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:281:22
    at param (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:354:14)
    at param (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:365:14)
    at Function.process_params (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:410:3)
    at next (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:275:10)
    at Function.handle (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:174:3)
    at router (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:47:12)
    at Layer.handle [as handle_request] (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:317:13)
    at /home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:335:12)
    at next (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:275:10)
    at /home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:635:15
    at next (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:260:14)
    at Function.handle (/home/mastcoder/metabrainz/bookbrainz-site/node_modules/express/lib/router/index.js:174:3)
GET /revision/3211 500 135.255 ms - 7774
GET /stylesheets/style.css 304 0.721 ms - -
GET /stylesheets/react-virtualized.css 304 0.374 ms - -
GET /stylesheets/react-virtualized-select.css 304 0.484 ms - -
GET /js/bundle.js 304 0.376 ms - -
GET /images/BrowserStack.png 304 0.360 ms - -
GET /images/BookBrainz_logo_mini.svg 304 0.263 ms - -
GET /images/icons/favicon-16x16.png 304 0.355 ms - -