My discord bot is not responding even though there is no error

const { Client, Intents } = require('discord.js');
const client = new Client({ intents: [Intents.FLAGS.GUILDS] });

const config = require('./config.json');

client.once('ready', () => {
    console.log("go");
})

client.on('message', (message) => {

    if(message.content == "ping"){
        message.channel.send("pong");
    }
})

client.login(config.token);

There is no error in the code, but when I type ping, the bot does not respond, does anyone know why?

>Solution :

It’s because you don’t have the GUILD_MESSAGES intent enabled !

Replace that line :

const client = new Client({ intents: [Intents.FLAGS.GUILDS] });

with

const client = new Client({ intents: [Intents.FLAGS.GUILDS,Intents.FLAGS.GUILD_MESSAGES] });

As you can see from the official documentation :

GUILD_MESSAGES intent let us have events and one of them is MESSAGE_CREATE (emits when a message is created (sent))