What's the most efficient way to solve the following 'MongoError'?

errmsg: 'Authentication failed.', code: 18, codeName: 'AuthenticationFailed', operationTime: Timestamp { bsontype: 'Timestamp', low: 2, high_: 1545069399 }, '$clusterTime': { clusterTime: Timestamp { bsontype: 'Timestamp', low: 2, high_: 1545069399 }, signature: { hash: [Object], keyId: [Object] } }, name: 'MongoError', [Symbol(mongoErrorContextSymbol)]: {} }