TypeError: Cannot read property 'get' of undefined #14

events.js:182
      throw er; // Unhandled 'error' event
      ^

TypeError: Cannot read property 'get' of undefined
    at /Users/brankozivanovic/Desktop/Stream-Example-Nodejs/routes.js:278:4
    at model.Query.<anonymous> (/Users/brankozivanovic/Desktop/Stream-Example-Nodejs/node_modules/mongoose/lib/model.js:4054:16)
    at /Users/brankozivanovic/Desktop/Stream-Example-Nodejs/node_modules/kareem/index.js:273:21
    at /Users/brankozivanovic/Desktop/Stream-Example-Nodejs/node_modules/kareem/index.js:131:16
    at _combinedTickCallback (internal/process/next_tick.js:131:7)
    at process._tickCallback (internal/process/next_tick.js:180:9)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! Stream@1.0.0 start: `node app.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the Stream@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/brankozivanovic/.npm/_logs/2017-12-21T13_15_37_512Z-debug.log````