I'm quite a newbie to node.js and I'm currently using discord.js to make a Discord bot. As soon as any bot command gets used the console prints a DeprecationWarning.
for example:

(node:15656) DeprecationWarning: Collection#find: pass a function instead

(node:15656) sometimes is another number, nearly always changing.

This is what my code looks like (only one command, I've got multiple, I get this error with all of them though):

const botconfig = require(./botconfig.json)

const Discord = require(discord.js);

const bot = new Discord.Client();



bot.on(ready, () => { 

    console.log(`Launched ${bot.user.username}...`);

    bot.user.setActivity(Games, { type: PLAYING });

});



bot.on(message, async message => {

    if (message.author.bot) return;



    let prefix = botconfig.prefix;

    let messageArray = message.content.split( );

    let cmd = messageArray[0];

    let args = messageArray.slice(1);

    let botico = bot.user.displayAvatarURL;



    if (cmd == `${prefix}help`) {

        let helpEmbed = new Discord.RichEmbed()

            .addField(.kick, kick a user, true)

            .addField(.ban, ban a user, true)

            .addField(.unban, unbans a user, true)

            .addField(.mute, mutes a user over a period of time, true)

            .setColor(#005b5f)

            .setThumbnail(botico);



        message.channel.send(helpEmbed);

        console.log(`command used: help`);

    };

});



bot.login(botconfig.token)