npm run dev 했을때 몽고db 오류

npm run dev 했을때

정상적으로 웹이 켜지긴하는데

sign in, sign up이 보이지않고 로그아웃만 보입니다

터미널에선 이런 오류가 나옵니다

그리고 혹시 dev.js 에서 

<username> <password>

부분 유저네임 sj 패스워드 root면

<sj><root> 이런식으로 기입하는게 맞나요?

MongooseError [MongooseServerSelectionError]: Authentication failed.

[0]     at new MongooseServerSelectionError (C:\Users\hsj11\Desktop\st\node_modules\mongoose\lib\error\serverSelection.js:22:11)

[0]     at NativeConnection.Connection.openUri (C:\Users\hsj11\Desktop\st\node_modules\mongoose\lib\connection.js:823:32)

[0]     at Mongoose.connect (C:\Users\hsj11\Desktop\st\node_modules\mongoose\lib\index.js:333:15)[0]     at Object.<anonymous> (C:\Users\hsj11\Desktop\st\server\index.js:18:26)

[0]     at Module._compile (internal/modules/cjs/loader.js:1137:30)

[0]     at Object.Module._extensions..js (internal/modules/cjs/loader.js:1157:10)

[0]     at Module.load (internal/modules/cjs/loader.js:985:32)

[0]     at Function.Module._load (internal/modules/cjs/loader.js:878:14)

[0]     at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:71:12)      

[0]     at internal/main/run_main_module.js:17:47 {

[0]   reason: TopologyDescription {

[0]     type: 'ReplicaSetNoPrimary',

[0]     setName: null,

[0]     maxSetVersion: null,

[0]     maxElectionId: null,

[0]     servers: Map {

[0]       'sangjun-shard-00-00.rckbj.mongodb.net:27017' => [ServerDescription],

[0]       'sangjun-shard-00-01.rckbj.mongodb.net:27017' => [ServerDescription],

[0]       'sangjun-shard-00-02.rckbj.mongodb.net:27017' => [ServerDescription]

[0]     },

[0]     stale: false,

[0]     compatible: true,

[0]     compatibilityError: null,

[0]     logicalSessionTimeoutMinutes: null,

[0]     heartbeatFrequencyMS: 10000,

[0]     localThresholdMS: 15,

[0]     commonWireVersion: null

[0]   },

[0]   [Symbol(mongoErrorContextSymbol)]: {}

[0] }

<script></script>