Mongo connection Error: MongoServerSelectionError: getaddrinfo ENOTFOUND datahub

[albertdugba]

I always have this issue anytime, I try connecting my app to datahub. Dont know what am doing wrong but its not working. This is my error

Mongo connection Error:  MongoServerSelectionError: getaddrinfo ENOTFOUND datahub
    at Timeout._onTimeout (/Users/Dugba/Desktop/origoproject/gazelle-shared-services/node_modules/mongodb/lib/core/sdam/topology.js:428:30)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7) {
  reason: TopologyDescription {
    type: 'Single',
    setName: null,
    maxSetVersion: null,
    maxElectionId: null,
    servers: Map(1) { 'datahub:27017' => [ServerDescription] },
    stale: false,
    compatible: true,
    compatibilityError: null,
    logicalSessionTimeoutMinutes: null,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    commonWireVersion: null
  },
  [Symbol(mongoErrorContextSymbol)]: {}
}

AND this is my code

const mongo = require("mongodb");
const client = new mongo.MongoClient("mongodb://datahub:27017", {
  useUnifiedTopology: true,
});

client
  .connect()
  .then(() => console.log("Connected to Mongo Database"))
  .catch(err => console.log("Mongo connection Error: ", err));

module.exports = client;