----------------------------Code--------------------------


require('dotenv').config();

  const cooldowns = new Map();
module.exports = (Discord, client, message) => {
  const prefix = '!';
  if (!message.content.startsWith(prefix) || message.author.bot) return;

  const args = message.content.slice(prefix.length).split(/ +/);
  const cmd = args.shift().toLowerCase();


  const command = client.commands.get(cmd) ||
    client.commands.find(a => aliases && a.aliases.includes(cmd));

  if (!cooldowns.has(command.name)) {
    cooldowns.set(command.name, new Discord.Collection());
  }

  const current_time = Date.now();
  const time_stamps = cooldowns.get(command.name);
  const cooldown_amount = (command.cooldown) * 1000;

  if (time_stamps.has(message.author.id)) {
    const expiration_time = time_stamps.get(message.author.id) + cooldown_amount;

    if (current_time < expiration_time) {
      const time_left = (expiration_time - current_time) / 1000;

      return message.reply(`Please wait ${time_left.toFixed(1)} more seconds before using ${command.name}`);
    }
  }

  time_stamps.set(message.author.id, current_time);
  setTimeout(() => time_stamps.delete(message.author.id), cooldown_amount);








  const validPermissions = [
    "CREATE_INSTANT_INVITE",
    "KICK_MEMBERS",
    "BAN_MEMBERS",
    "ADMINISTRATOR",
    "MANAGE_CHANNELS",
    "MANAGE_GUILD",
    "ADD_REACTIONS",
    "VIEW_AUDIT_LOG",
    "PRIORITY_SPEAKER",
    "STREAM",
    "VIEW_CHANNEL",
    "SEND_MESSAGES",
    "SEND_TTS_MESSAGES",
    "MANAGE_MESSAGES",
    "EMBED_LINKS",
    "ATTACH_FILES",
    "READ_MESSAGE_HISTORY",
    "MENTION_EVERYONE",
    "USE_EXTERNAL_EMOJIS",
    "VIEW_GUILD_INSIGHTS",
    "CONNECT",
    "SPEAK",
    "MUTE_MEMBERS",
    "DEAFEN_MEMBERS",
    "MOVE_MEMBERS",
    "USE_VAD",
    "CHANGE_NICKNAME",
    "MANAGE_NICKNAMES",
    "MANAGE_ROLES",
    "MANAGE_WEBHOOKS",
    "MANAGE_EMOJIS",
  ]

  if (command.permissions.length) {
    let invalidPerms = []
    for (const perm of command.permissions) {
      if (!validPermissions.includes(perm)) {
        return console.log(`Invalid Permissions ${perm}`);
      }
      if (!message.member.hasPermission(perm)) {
        invalidPerms.push(perm);
      }
    }
    if (invalidPerms.length) {
      return message.channel.send(`Missing Permissions: \`${invalidPerms}\``);
    }
  }








  if (command) command.execute(client, message, args, cmd, Discord);
}














---------------------------Error----------------------

Desktop\Discord Bot\events\guild\message.js:77
  if (command.permissions.length) {
                          ^

TypeError: Cannot read property 'length' of undefined
    at module.exports (C:\Users\selve\OneDrive\Desktop\Discord Bot\events\guild\message.js:77:27)