(node:17032) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'database' of undefined?

module.exports = {
    name: "ban",
    usage: "ban <user>",
    async execute(message, args , bot) {
        console.trace(this);
        const target = message.mentions.users.first() ? message.mentions.users.first().id : args[2];
        await bot.database.ban(target, "user", "Admin ban");
        bot.banCache.user.push(target);
        message.channel.send(`<@${target}> has been banned!`);
    }
};

const discord = require("discord.js")
const client = new discord.Client({ disableEveryone: true, disabledEvents: ['TYPING_START'] })
const { readdirSync } = require("fs")
const { join } = require("path")
const { TOKEN, PREFIX } = require("./config.json")
const strftime = require('strftime')

client.login(TOKEN)
client.commands = new discord.Collection()
client.prefix = PREFIX
client.queue = new Map()


client.on("ready", () => console.log("\nI'am ready! P.S Nexi Bot!\n"))
client.on("warn", info => console.log(info))
client.on("error", console.error)

const commandFiles = readdirSync(join(__dirname, "commands")).filter(file => file.endsWith(".js"))
for (const file of commandFiles) {
  const command = require(join(__dirname, "commands", `${file}`));
  client.commands.set(command.name, command)
}
client.on('ready', () => {
  setInterval(() => {
      client.user.setActivity(new Date().toLocaleTimeString('ru', {
timeZone: 'Europe/Moscow'
}), {
          type: 'WATCHING'
      })
  }, 1000)
})

client.on("message", async message => {
  if (message.author.bot) return
  if (!message.guild) return

  if (message.content.startsWith(PREFIX)) {
    const args = message.content.slice(PREFIX.length).trim().split(/ +/)
    const command = args.shift().toLowerCase()

    if (!client.commands.has(command)) return

    try {
      client.commands.get(command).execute(message,args)
    } catch (error) {
      console.error(error)
      message.reply("Ошибка").catch(console.error)
    }
  }
})