THU 18/10/2018 ~ TrueBot Error

index.js

const Discord = require("discord.js");
const client = new Discord.Client();
require("dotenv").config();
const env = process.env;
const version = "v1.0.1 - 2018-10-18";
const mainColor = "#7289DA";
const github = "https://github.com/True-Coder-Ltd/TrueBot";

client.login(env.TOKEN);

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

client.user.setActivity(`${client.guilds.size} Servers`, {
  type: "LISTENING",
  url: github
});

client.on("guildMemberAdd", (member) => {
  const channel = member.guild.channels.find((ch) => ch.name === "join-leave");

  if (!channel) return;

  channel.send(`Welcome to ${member.guild.name}, ${member.user.username}!`);
});

client.on("message", (messageRaw) => {
  if (messageRaw.author.bot) return;
  if (!messageRaw.content.startsWith(env.PREFIX)) return;
  if (!messageRaw.guild) return;

  const message = messageRaw.content;

  // t!help - Replies with the current version of TrueBot
  if (message.startsWith(`${env.PREFIX}version`)) {
    messageRaw.channel.send(version)
  };

  // t!help ~ Shows a help message about the bot
  if (message.startsWith(`${env.PREFIX}help`)) {
    let embed = new Discord.RichEmbed()
      .setAuthor(client.user.username)
      .setColor(mainColor)
      .setTitle(`${client.user.username} - Help`)
      .setURL(github)
      .setFooter(`A help message about ${client.user.username}`)
      .addField("Server Count", client.guilds.size)
      .addField("Creator", "Truecoder Ltd")
      .addField("Version", version)
      .addField("Project Respiratory", github)
      .addField("Commands", `Please use \`${env.PREFIX}commands\` to get commands`);

    messageRaw.channel.send(embed);
  };

  if (message.startsWith(`${env.PREFIX}commands`)) {
    let embed = new Discord.RichEmbed()
      .setAuthor(client.user.username)
      .setColor(mainColor)
      .setTitle(`${client.user.username} - Commands`)
      .setURL(github)
      .setFooter(`A list of commands for ${client.user.username}`)
      .addField(`${env.PREFIX}help`, "Shows a help message")
      .addField(`${env.PREFIX}version`, `Shows the current version of ${client.user.username}`)
      .addField(`${env.PREFIX}commands`, "Shows this message");

    messageRaw.channel.send(embed);
  }
});