Node.js 控制台显示一个长对象，我可以'；每当我发布更新Mongoose数据库的请求时，我都不知道错误是什么，

我有3个mongoose Collection :董事会，线和回复.每个回复属于1个线程，每个线程属于1个Board. 当我想要向Thread添加一个新的回复时，我会使用表单数据发出POST请求，其中包括thodid(来自现有的Thread).

当我向现有的线程id发出POST请求时，这段代码运行得很好，但是当我试图用一个不可用的线程id发出POST请求时，控制台显示了很多东西，我不知道错误是什么.(预期输出:"找不到线程").

请帮帮我.我是个新手，真的很想收到大家的意见！

我的问题是在/api/replies/:board号公路.如果没有updateThread，控制台不会像我预期的那样显示"Thread Not Found"，而是一个像error这样的长对象(我滚动到顶部，但似乎控制台没有足够的空间来显示完整的错误)

'use strict';

const BoardModel = require('../models').Board;
const ThreadModel = require('../models').Thread;
const ReplyModel = require('../models').Reply;

module.exports = function (app) {
  
  app.route('/api/threads/:board').post(async (req, res) => {
    const { text, delete_password } = req.body;
    let { board } = req.body;
    if (!board) {
      board = req.params.board;
    }
    
    //Add new Thread
    const newThread = new ThreadModel({
      text: text,
      reported: false,
      delete_password: delete_password,
      replies: [],
    })
    let saveThread = await newThread.save();
    console.log("New thread added:");
    console.log(newThread.text);

    //Add new Board
    const oldBoard = await BoardModel.findOne({ name: board }).exec();
    if (!oldBoard) {
      const newBoard = new BoardModel({
        name: board,
        threads: [newThread],
      })
      let saveBoard = await newBoard.save();
      console.log("New thread added to this new board:");
      console.log(newBoard.name);
      res.json(saveBoard)
    } else {
      oldBoard.threads.push(newThread);
      let saveBoard = await oldBoard.save()
      console.log("New thread added to the existing board:");
      console.log(oldBoard.name);
      res.json(saveBoard);
    }
  });
    
  app.route('/api/replies/:board').post(async (req, res) => {
    const { text, delete_password, thread_id } = req.body;
    let { board } = req.body;
    if (!board) {
      board = req.params.board;
    }
   
    const updateThread = await ThreadModel.findById(thread_id).exec();
    if (!updateThread) {
      console.log("Thread not found");   
      res.send("Thread not found");
    }
    //Add new Reply
    const newReply = new ReplyModel({
      text: text,
      delete_password: delete_password,
      reported: false,
    })
    let saveReply = await newReply.save();
    console.log("New reply added:");
    console.log(newReply.text);

    //Update Thread
    updateThread.replies.push(saveReply);
    let saveThread = await updateThread.save();
    console.log('New reply added to this thread:');
    console.log(updateThread.text);

    res.json(saveReply);
  });

};