Errors connecting to AWS Keyspaces using a lambda layer

Intermittently getting the following error when connecting to an AWS keyspace using a lambda layer

All host(s) tried for query failed. First host tried, 3.248.244.53:9142: Host considered as DOWN. See innerErrors.

I am trying to query a table in a keyspace using a nodejs lambda function as follows:

import cassandra from 'cassandra-driver';
import fs from 'fs';

export default class AmazonKeyspace {

  tpmsClient = null;

  constructor () {
    let auth = new cassandra.auth.PlainTextAuthProvider('cass-user-at-xxxxxxxxxx', 'zzzzzzzzz');
    let sslOptions1 = {
      ca: [ fs.readFileSync('/opt/utils/AmazonRootCA1.pem', 'utf-8')],
      host: 'cassandra.eu-west-1.amazonaws.com',
      rejectUnauthorized: true
    };
    this.tpmsClient = new cassandra.Client({
      contactPoints: ['cassandra.eu-west-1.amazonaws.com'],
      localDataCenter: 'eu-west-1',
      authProvider: auth,
      sslOptions: sslOptions1,
      keyspace: 'tpms',
      protocolOptions: { port: 9142 }
    });
  }

  getOrganisation = async (orgKey) => {
    const SQL = 'select * FROM organisation where organisation_id=?;';

    return new Promise((resolve, reject) => {
      this.tpmsClient.execute(SQL, [orgKey], {prepare: true}, (err, result) => {
        if (!err?.message) resolve(result.rows);
        else reject(err.message);
      });
    });
  };
}

I am basically following this recommended AWS documentation.
https://docs.aws.amazon.com/keyspaces/latest/devguide/using_nodejs_driver.html

It seems that around 10-20% of the time the lambda function (cassandra driver) cannot connect to the endpoint.

I am pretty familiar with Cassandra (I already use a 6 node cluster that I manage) and don’t have any issues with that.

Could this be a timeout or do I need more contact points?

Followed the recommended guides. Checked from the AWS console for any errors but none shown.

UPDATE:
Update to the above question….

I am occasionally (1 in 50 if I parallel call the function (5 concurrent calls)) getting the below error:

"All host(s) tried for query failed. First host tried,
3.248.244.5:9142: DriverError: Socket was closed at Connection.clearAndInvokePending
(/opt/node_modules/cassandra-driver/lib/connection.js:265:15) at
Connection.close
(/opt/node_modules/cassandra-driver/lib/connection.js:618:8) at
TLSSocket.
(/opt/node_modules/cassandra-driver/lib/connection.js:93:10) at
TLSSocket.emit (node:events:525:35)n at node:net:313:12n at
TCP.done (node:_tls_wrap:587:7) { info: ‘Cassandra Driver Error’,
isSocketError: true, coordinator: ‘3.248.244.5:9142’}