cann't login in

[widora]

error: Email address or password is not correct!
my config.js is:
admin:{
'widora@qq.com': '12345678' // Administrator account of IoTgo platform
},

but cann't login.

the log:
root@iZ285zrpk4eZ:~/IoTgo# DEBUG="iotgo" PORT=3000 ./bin/www
iotgo Express server listening on port 3000 +0ms
iotgo Connect to DB successful! +180ms
GET /login 302 12.267 ms - 70
POST /api/user/login 200 28.361 ms - 53

[mohamedmostafaa]

iotgo Connect to DB failed! +291ms
any help

[mohamedmostafaa]

iotgo MongoError: auth fails
at Object.toError (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/utils.js:114:11)
at /home/pi/IoTgo/node_modules/mongodb/lib/mongodb/db.js:1196:31
at /home/pi/IoTgo/node_modules/mongodb/lib/mongodb/db.js:1905:9
at Server.Base._callHandler (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/connection/base.js:453:41)
at /home/pi/IoTgo/node_modules/mongodb/lib/mongodb/connection/server.js:488:18
at MongoReply.parseBody (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/responses/mongo_reply.js:68:5)
at . (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/connection/server.js:446:20)
at emitOne (events.js:96:13)
at emit (events.js:188:7)
at . (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:207:13)
at emitTwo (events.js:106:13)
at emit (events.js:191:7)
at Socket. (/home/pi/IoTgo/node_modules/mongodb/lib/mongodb/connection/connection.js:440:22)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at readableAddChunk (_stream_readable.js:172:18) +6ms

[mohamedmostafaa]

iotgo Error: failed to connect to [localhost:27017]