Javascript-форум - Веб-сервисы, работа с ошибками / Express, Mongoose... не работает пример.

В этом видео уроке https://youtu.be/YZwAVRsa1O4?list=PL...1Hb3G g&t=114
(скринкасте) есть такой пример как:

app.get('/user/:id', function(req, res, next){
  User.findById(req.params._id, function(err, user){
    if(err) return next(err);
    res.json(user);
  });
});

Но он не работает.

Код:

Express

500 CastError: Cast to ObjectId failed for value "586f2862632df73c31f25df3" at path "_id" for model "User"

   at MongooseError.CastError (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/error/cast.js:26:11)

   at ObjectId.cast (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/schema/objectid.js:147:13)

   at ObjectId.castForQuery (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/schema/objectid.js:187:15)

   at cast (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/cast.js:229:32)

   at Query.cast (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/query.js:2752:12)

   at Query.findOne (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/query.js:1353:10)

   at Function.findOne (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/model.js:1343:13)

   at Function.findById (/home/farex/dev/nodejs_dev/lessons_30/node_modules/mongoose/lib/model.js:1271:15)

   at /home/farex/dev/nodejs_dev/lessons_30/app.js:42:8

   at callbacks (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:164:37)

   at param (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:138:11)

   at param (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:135:11)

   at pass (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:145:5)

   at Router._dispatch (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:173:5)

   at Object.router (/home/farex/dev/nodejs_dev/lessons_30/node_modules/express/lib/router/index.js:33:10)

   at next (/home/farex/dev/nodejs_dev/lessons_30/node_modules/connect/lib/proto.js:174:15)