Need help with tmi.js errors

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5

Basically DBKynd is correct. You’re calling the action function before a connection had even been made.

I recommend after the connected event or the join event:

twitchBot.on('join', (channel, username, self) => {
    if(self) {
        twitchBot.action(channel, 'Joined.')
            .catch(err => console.log(err));
    }
});