[nodemon] app crashed - waiting for file changes before starting...

[Sadanandgadwal]

[nodemon] 2.0.7
[nodemon] to restart at any time, enter rs
[nodemon] watching path(s): .
[nodemon] watching extensions: js,mjs,json
[nodemon] starting node server.js
info - Using webpack 5. Reason: no next.config.js https://nextjs.org/docs/messages/webpack5
event - compiled successfully
Epress server running on ${PORT}
MongooseServerSelectionError: Could not connect to any servers in your MongoDB Atlas cluster. One common reason is that you're trying to access the database from an IP that isn't whitelisted. Make sure your current IP address is on your Atlas cluster's IP whitelist: https://docs.atlas.mongodb.com/security-whitelist/
at NativeConnection.Connection.openUri (C:\Users\sadan\Course\node_modules\mongoose\lib\connection.js:846:32)
at C:\Users\sadan\Course\node_modules\mongoose\lib\index.js:351:10
at C:\Users\sadan\Course\node_modules\mongoose\lib\helpers\promiseOrCallback.js:31:5
at new Promise ()
at promiseOrCallback (C:\Users\sadan\Course\node_modules\mongoose\lib\helpers\promiseOrCallback.js:30:10)
at Mongoose._promiseOrCallback (C:\Users\sadan\Course\node_modules\mongoose\lib\index.js:1149:10)
at Mongoose.connect (C:\Users\sadan\Course\node_modules\mongoose\lib\index.js:350:20)
at connectDb (C:\Users\sadan\Course\utilsServer\connectDb.js:5:20)
at Object. (C:\Users\sadan\Course\server.js:12:1)
at Module._compile (internal/modules/cjs/loader.js:1068:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1097:10)
at Module.load (internal/modules/cjs/loader.js:933:32)
at Function.Module._load (internal/modules/cjs/loader.js:774:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47 {
reason: TopologyDescription {
type: 'ReplicaSetNoPrimary',
setName: null,
maxSetVersion: null,
maxElectionId: null,
servers: Map(3) {
'cluster0-shard-00-01.wzkf6.mongodb.net:27017' => [ServerDescription],
'cluster0-shard-00-02.wzkf6.mongodb.net:27017' => [ServerDescription],
'cluster0-shard-00-00.wzkf6.mongodb.net:27017' => [ServerDescription]
},
stale: false,
compatible: true,
compatibilityError: null,
logicalSessionTimeoutMinutes: null,
heartbeatFrequencyMS: 10000,
localThresholdMS: 15,
commonWireVersion: null
}
}
[nodemon] app crashed - waiting for file changes before starting...