I'm following a tutorial on YouTube: how on how to code a Discord bot

(I'm very new to coding and wanted to start somewhere, also I needed a bot).

The code was working fine until I started adding some more commands such as -play and -leave. After that the bot doesn't responds to any commands.

I've tried changing the prefixes, starting from scratch, and just copy-pasting his code to mine. The bot turns online, but its almost like the code that makes him respond isn't there.

Here's my code:

const Discord = require('discord.js');
const client = new Discord.Client({ intents: [] })

const prefix = '-';

const fs = require('fs');

client.commands = new Discord.Collection();

const commandFiles = fs.readdirSync('./commands/').filter(file => file.endsWith('.js'))
for(const file of commandFiles){
    const command = require(`./commands/${file}`);

    client.commands.set(command.name, command);

}

client.once('ready', () => {
   console.log('SaltSounds Is Online!');
});

client.on('message', message =>{
    if(!message.content.startsWith(prefix) || message.author.bot) return;


const args = message.content.slice(prefix.length).split(/ +/);
const command = args.shift().toLowerCase();

if(command === 'ping'){
    message.channel.send('pong!')
    }
});

client.login('my token');