MongoNetworkError: connect ETIMEDOUT 3.108.0.179:27017

Question

I have created a function that handles the connection with multiple mongoDb databases. And it worked well, but suddenly before 3 - 4 weeks the mongoDb started throwing error of connection timeout and reset pool (Below is the full error)

I have whitelisted my IP as well as allowed all IP for now.

MongoNetworkError: connect ETIMEDOUT 3.108.0.179:27017
    at connectionFailureError (G:\ALIAN PROJECT\alian-hub-api\node_modules\mongodb\lib\cmap\connect.js:367:20)
    at TLSSocket.<anonymous> (G:\ALIAN PROJECT\alian-hub-api\node_modules\mongodb\lib\cmap\connect.js:290:22)
    at Object.onceWrapper (node:events:629:26)
    at TLSSocket.emit (node:events:514:28)
    at TLSSocket.emit (node:domain:489:12)
    at emitErrorNT (node:internal/streams/destroy:151:8)
    at emitErrorCloseNT (node:internal/streams/destroy:116:3)
    at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
  cause: Error: connect ETIMEDOUT 3.108.0.179:27017
      at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1495:16) {
    errno: -4039,
    code: 'ETIMEDOUT',
    syscall: 'connect',
    address: '3.108.0.179',
    port: 27017
  },
  connectionGeneration: 0,
  [Symbol(errorLabels)]: Set(1) { 'ResetPool' }
}

Sometimes even at the start of my node server it throws this error

here is the configration for connection

const connection = await mongoose.createConnection(`${process.env.MONGODB_URL}/${db}`, { maxPoolSize: 60, useNewUrlParser: true, connectTimeoutMS: 50000 })

connection.on('connected', () => {
  logger.info(`MONGO CONNECTION ${db}: connected`);
  console.log(`MONGO CONNECTION ${db}: connected`);
  resolve(connection);
});

  //...Other handers for connection

connection.on('error', (error) => {
  logger.error(`MONGO CONNECTION: error >> ${JSON.stringify(error)}`)
});

I also dropped these question in mongoSupport but still no answers found.