Express

500 ReferenceError: messages is not defined
   at app.get.History.find.sort.limit.populate.exec.res.render.history (/home/eric/codingsoundtrack.org/codingsoundtrack.js:105:27)
   at callbacks (/home/eric/codingsoundtrack.org/node_modules/express/lib/router/index.js:164:37)
   at param (/home/eric/codingsoundtrack.org/node_modules/express/lib/router/index.js:138:11)
   at pass (/home/eric/codingsoundtrack.org/node_modules/express/lib/router/index.js:145:5)
   at Router._dispatch (/home/eric/codingsoundtrack.org/node_modules/express/lib/router/index.js:173:5)
   at Object.router (/home/eric/codingsoundtrack.org/node_modules/express/lib/router/index.js:33:10)
   at next (/home/eric/codingsoundtrack.org/node_modules/express/node_modules/connect/lib/proto.js:169:15)
   at Object.app.locals.config [as handle] (/home/eric/codingsoundtrack.org/codingsoundtrack.js:26:3)
   at next (/home/eric/codingsoundtrack.org/node_modules/express/node_modules/connect/lib/proto.js:169:15)
   at multipart (/home/eric/codingsoundtrack.org/node_modules/express/node_modules/connect/lib/middleware/multipart.js:94:61)