I'm trying to make a userinfo command, and I'm currently stuck on showing roles of the user.

Here is my code:

const Discord = module.require('discord.js');

const moment = require('moment');



module.exports.run = async (bot, message, args) => {



    let user = message.mentions.users.first() || message.author;

    const joinDiscord = moment(user.createdAt).format('llll');

    const joinServer = moment(user.joinedAt).format('llll');

    let embed = new Discord.RichEmbed()

        .setAuthor(user.username + '#' + user.discriminator, user.displayAvatarURL)

        .setDescription(`${user}`)

        .setColor(`RANDOM`)

        .setThumbnail(`${user.displayAvatarURL}`)

        .addField('Joined at:', `${moment.utc(user.joinedAt).format('dddd, MMMM Do YYYY, HH:mm:ss')}`, true)

        .addField('Status:', user.presence.status, true)

        .addField('Roles:', user.roles.map(r => `${r}`).join(' | '), true)

        .setFooter(`ID: ${user.id}`)

        .setTimestamp();



    message.channel.send({ embed: embed });

    return;

}



module.exports.help = {

    name: 'userinfo'

}

I'm getting this error TypeError: Cannot read property 'map' of undefined and I don't know how to fix it?