Discord.JS messageDeleted event not being triggered

I have just started creating a discord bot using discord.js and was trying out the events and came across an issue. The messageDeleted event doesn't trigger when a message gets deleted.

const discord = require('discord.js');
const Client = new discord.Client();
const token = 'bot_token';

Client.on('ready', function(){console.log('Logged on!')});

Client.on('messageDeleted', function(message, channel){
    console.log('Test, a message was deleted.');
});

Client.login(token);

It never prints out 'Test, a message was deleted.' when I delete a message. note I've tried deleting messages already in chat before running the code and deleting messages I created after running the code to see if that was the issue. Still nothing.

via CyberLX