Discord bot is getting the message content as null

Question

message.content isn't working with any of the commands I made. It doesn't see my message's content. It's only working when I use message.content === ""

My code:

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

client.on('ready', () => {
    console.log(`Logged in as ${client.user.tag}!`);
});

client.on("messageCreate", (message) => {
    if(message.content === ""){
        message.reply("I am working");
    }
});

client.login("..");