Vfrdtyky

i'm new to nodejs i'm trying to make secure route using jwt and passport it work's fine but when i try to verify some information in database using mongoose and returning result i'm getting this error "Can't set headers after they are sent"

here is the code that generate the error (res.status(404).json(errors))

router.get(

    '/',

    passport.authenticate('jwt', { session: false }),

    (req, res) => {

        const errors = {};

        Profile.findOne({ user: req.user.id })

            .then(profile => {

                if (!profile) {

                    errors.noprofile = 'There is no profile for this user';

                    return res.status(404).json(errors);

                }

                res.json(profile);

            })

            .catch(err => console.log(err));

    }

);

this is profile model shcema

const mongoose = require('mongoose');

const Schema = mongoose.Schema;







const ProfileSchema = new Schema({

    user: {

        type: Schema.Types.ObjectId,

        ref: 'user'

    },

    handel: {

        type: String,

        require: true,

        max: 40

    },

    company: {

        type: String,

    },

    webSite: {

        type: String,

    },

    location: {

        type: String,

    },

});



module.exports = Profile = mongoose.model('profile', ProfileSchema);

this is my server

const express = require('express');

const mongoose = require('mongoose');

const bodyParser = require('body-parser');

const passport = require('passport');





const profile = require('./routes/api/profile');







const app = express();



// passport

app.use(passport.initialize());



// passport config

require('./config/passport')(passport);



// body Parser middleware

app.use(bodyParser.urlencoded({extended:false}));

app.use(bodyParser.json());



//DB config and connection

const db=require('./config/keys').mongoURI;

mongoose.connect(db, { useNewUrlParser: true })

    .then(() => console.log("connected"))

    .catch(err => console.log(err))





app.use('/api/profile',profile);

const port=process.env.PORT ||5000



app.listen(port,() => console.log('works'))

this is my passport config

const JwtStrategy = require('passport-jwt').Strategy;

const ExtractJwt = require('passport-jwt').ExtractJwt;

const mongoose = require('mongoose');

const User = mongoose.model('user');

const keys = require('./keys');



const opts = {};

opts.jwtFromRequest = ExtractJwt.fromAuthHeaderAsBearerToken();

opts.secretOrKey = keys.secretKey;



module.exports = passport => {

    passport.use(

        new JwtStrategy(opts, (jwt_payload, done) => {

            User.findById(jwt_payload.id)

                .then(user => {

                    if(user){

                        done(null, user);

                    }

                    done(null, false);

                }).catch(err => console.log(err));

    }))



}