Why isn't messageCreate getting triggered?

import { Client, GatewayIntentBits, Partials } from 'discord.js';
const client = new Client({ 
    intents: [GatewayIntentBits.Guilds, GatewayIntentBits.GuildMessages, GatewayIntentBits.MessageContent, GatewayIntentBits.GuildMembers],
    partials: [Partials.Message, Partials.Channel, Partials.Reaction],
});


client.once('ready', async c => {
    console.log('bot is logged in');
});

client.on('messageCreate', async message => {
    console.log('message received:', message.content);
});

client.login(process.env.DISCORD_BOT_TOKEN);

export default client;