Can't whisper

info: [#jtv] Executing command: /w mig4ng Welcome to the stream! Hope you enjoy ^-^
info: [#jtv] Unrecognized command: /w
warn: You must be connected to a group server to send or receive whispers.

This is the error I get when I try to whisper, and my bot is connected to the channel since it can use the say Command, any idea why?

[AlcaDesign]

You must be connected to a group server to send or receive whispers.

You have to create a separate connection to the “group” cluster (separate from the “main” cluster) in order to send whispers. Use the whisper method on the “group” cluster.

const tmi = require('tmi.js');

var channel = '',
    identity = {
            username: '',
            password: ''
        },
    greeting = 'Welcome to the stream! Hope you enjoy ^-^',

    client = new tmi.client({
            options: { debug: true },
            identity
        }),
    groupClient = new tmi.client({
            options: { debug: true },
            identity,
            connection: { cluster: 'group' }
        });

client.on('join', (channel, username) => {
        if(username !== client.getUsername()) {
            groupClient.whisper(username, greeting);
        }
    });

Promise.all([client.connect(), groupClient.connect()])
    .then(() => client.join(channel));

[AlcaDesign]

@ccioloca There are no clusters – they were removed.