The broker does not support the requested SASL mechanism

Question

I have an MSK cluster in which i have used AWS IAM authentication .When i am telnet to the broker:9098, the broker gets connected .But when am passing the same broker:9098 in a node app's kafka producer code, it shows "The broker does not support the requested SASL mechanism". my kafka producer code goes like:

const { Kafka,logLevel } = require('kafkajs');

const kafka = new Kafka({
    clientId: 'api_gateway_client',
    brokers: ["b-2.ashxxxxx.xx74.cx.kafka.ap-southeast-1.amazonaws.com:9098"],
    ssl: true,
  sasl: {
    mechanism: 'aws',
    authorizationIdentity: '8829xxx97', // UserId or RoleId
    accessKeyId: 'AKIA4xxxxxGD37NEJ',
    secretAccessKey: 'q7SI3xxxxxxiAou6TDXWdyR6h',
    //sessionToken: 'WHArYt8i5vfQUrIxxxxxeL9tgQMJp6QFNEXAMPLETOKEN' // Optional
  },
})
const producer = kafka.producer();
producer.connect();

export async function sendKafkaMessage(topic: string, message: string): Promise<any> {

    const result = await producer.send({
        topic,
        messages: [
            { value: message }
        ]
    });
    return result;
}

producer.on('producer.connect',async () => {
    console.log('Kafka producer connected ................');
    const admin = kafka.admin();
    const topic = "geolah"
    const result = await producer.send({
            topic,
            messages: [
                { value: "hii TOPIC" }
            ]
     });

});