我有一个机器人，它获取用户消息内容，删除用户消息，然后向 message.author 发送私人消息，然后在嵌入中发送用户消息内容。 几条消息之后，机器人发送了 2 条消息而不是 1 条，并出现警告。有什么办法可以修复它吗？

警告：

superadmin@vps-XXXXXX:~/path$ node test.js (node:1059) UnhandledPromiseRejectionWarning: DiscordAPIError: Unknown Message at RequestHandler.execute (path/node_modules/discord.js/src/rest/RequestHandler.js:170:25) at processTicksAndRejections (internal/process/task_queues.js:97:5) (node:1059) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode ). (rejection id: 1) (node:1059) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

脚本：

const discord = require('discord.js');
const client = new discord.Client;

client.on('message', message => {
if (message.author === client.user && message.channel.id !== (508728211837026325)) {
  return;
}
if (message.channel.id == (508728211837026325)) {
  message.delete();
  message.author.send("Success!");
  message.channel.send({
    "embed": {
      "color": 61183,
      "description": message.content + "\n\nCreated by: " + "<@" + message.author.id + ">",
      "author": {
        "icon_url": "imgururl;",
        "url": "imgururl",
        "name": "test",
      },
      timestamp: new Date()
    }
  })
}
})
client.login('token');