/Users/dev/app/server.js:42
  throw new TypeError("Cannot read property 'id' of undefined");
  ^

TypeError: Cannot read property 'id' of undefined
    at getUser (/Users/dev/app/server.js:42:9)
    at Layer.handle [as handle_request] (/Users/dev/app/node_modules/express/lib/router/layer.js:95:5)
    at next (/Users/dev/app/node_modules/express/lib/router/route.js:137:13)
