Discord.js command handling. Command handling dont work - node.js

Question

I copied the code exactly from the official Discord.JS Guide. But the bot does not respond to the command in any way. How to solve it?
index.js:
const fs = require('node:fs');
const path = require('node:path');
const { Client, Collection, Events, GatewayIntentBits } = require('discord.js');
const { token } = require('./config.json');
const client = new Client({ intents: [GatewayIntentBits.Guilds] });
client.commands = new Collection();
const commandsPath = path.join(__dirname, 'commands');
const commandFiles = fs.readdirSync(commandsPath).filter(file => file.endsWith('.js'));
for (const file of commandFiles) {
const filePath = path.join(commandsPath, file);
const command = require(filePath);
client.commands.set(command.data.name, command);
}
client.once(Events.ClientReady, () => {
console.log('Ready!');
});
client.on(Events.InteractionCreate, async interaction => {
if (!interaction.isChatInputCommand()) return;
const command = client.commands.get(interaction.commandName);
if (!command) return;
try {
await command.execute(interaction);
} catch (error) {
console.error(error);
await interaction.reply({ content: 'There was an error while executing this command!', ephemeral: true });
}
});
client.login(token);
config.json:
{
"clientId": "my id",
"guildId": "my id",
"token": "my token"
}
ping.js:
const { SlashCommandBuilder } = require('discord.js');
module.exports = {
data: new SlashCommandBuilder()
.setName('ping')
.setDescription('Replies with Pong!'),
async execute(interaction) {
return interaction.reply('Pong!');
},
};
I searched on the Internet, and even found something, but in an attempt to repeat this, the bot did not respond to commands, although it turned on calmly.