TypeError: “encoding” must be a valid string encoding Node.js

Вот мой код:

const events = require('events');
const net = require('net');
const channel = new events.EventEmitter();
channel.clients = {};
channel.subscriptions = {};
channel.on('join', function(id, client){
this.clients[id] = client;
this.subscriptions[id] = (senderId, message) => {
if (id != senderId) {
this.clients[id].write(message);
}
};
this.on('broadcast', this.subscriptions[id]);
});
const server = net.createServer(client => {
const id = `${client.remoteAddress}:${client.remotePort}`;
channel.emit('join', id, client);
client.on('data', data =>{
data = data.toString();
channel.emit('broadcast', id, data); 
});
});
server.listen(8080); 

В чем заключается моя ошибка?