guildCreate（discordjs）（javascript）问题

Question

我在编写代码时遇到麻烦，因为它在同一通道中发送多次，但是多次发送，大约是4-20次，我不知道发生了什么，我急需帮助。谢谢！

client.on("guildCreate", guild => {

let defaultChannel = "";
guild.channels.cache.forEach((channel) => {
  if(channel.type == "text" && defaultChannel == "") {
    if(channel.permissionsFor(guild.me).has("SEND_MESSAGES")) {
      defaultChannel = channel;
    }
  }
})
defaultChannel.send('Thanks for adding me to your server!')


});