Cluster mode connection error: Failed to refresh slots cache

[armanhi]

Hi!

I'm trying to connect to a valkey cluster on Elasticache I've just created. I'm currently testing it using ECS, with this code: (pardon the obvious Redis references)

`const IORedis = require('iovalkey');
const redisConfig = {
enableAutoPipelining: true
};

  if (config.useRedisTLS) {
    redisConfig.tls = {};
  }

    return new IORedis.Cluster(
      [
        {
          port: redisPort,
          host: redisUrl
        }
      ],
      {
        maxRedirections: 3,
        //https://github.com/redis/ioredis?tab=readme-ov-file#read-write-splitting
        scaleReads: 'slave', //master,all,slave 
        redisOptions: redisConfig
      }
    );`

redisPort is an integer. redisUrl comes from "Configuration endpoint" in Elasticache, minus the port. Am I doing anything wrong?