client.replyMessage Bad Request 400

Question

I am trying create a chat bot using @line/bot-sdk. While sending reply i am getting 400 bad request. Below is the Error Log
Error Message HTTPError: Request failed with status code 400
    at HTTPClient.wrapError (/var/task/node_modules/@line/bot-sdk/dist/http.js:88:20)
    at /var/task/node_modules/@line/bot-sdk/dist/http.js:19:88
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
    at async HTTPClient.post (/var/task/node_modules/@line/bot-sdk/dist/http.js:33:21) {
  statusCode: 400,
  statusMessage: 'Bad Request',
  originalError: Error: Request failed with status code 400
      at createError (/var/task/node_modules/axios/lib/core/createError.js:16:15)
      at settle (/var/task/node_modules/axios/lib/core/settle.js:17:12)
      at IncomingMessage.handleStreamEnd (/var/task/node_modules/axios/lib/adapters/http.js:236:11)
      at IncomingMessage.emit (events.js:322:22)
      at endReadableNT (_stream_readable.js:1187:12)
      at processTicksAndRejections (internal/process/task_queues.js:84:21) {
    config: {
      url: 'https://api.line.me/v2/bot/message/reply',
      method: 'post',
      data: '{"messages":[{"type":"text","text":"Thanks for using our services."}],"replyToken":"8f0786141f64435bab0157fe49653a33","notificationDisabled":false}',
      headers: [Object],
      transformRequest: [Array],
      transformResponse: [Array],
      timeout: 0,
      adapter: [Function: httpAdapter],
      xsrfCookieName: 'XSRF-TOKEN',
      xsrfHeaderName: 'X-XSRF-TOKEN',
      maxContentLength: -1,
      validateStatus: [Function: validateStatus]
    },
    request: ClientRequest {
      _events: [Object: null prototype],
      _eventsCount: 6,
      _maxListeners: undefined,
      outputData: [],
      outputSize: 0,
      writable: true,
      _last: true,
      chunkedEncoding: false,
      shouldKeepAlive: false,
      useChunkedEncodingByDefault: true,
      sendDate: false,
      _removedConnection: false,
      _removedContLen: false,
      _removedTE: false,
      _contentLength: null,
      _hasBody: true,
      _trailer: '',
      finished: true,
      _headerSent: true,
      socket: [TLSSocket],
      connection: [TLSSocket],
      _header: 'POST /v2/bot/message/reply HTTP/1.1
' +
        'Accept: application/json, text/plain, */*
' +
        'Content-Type: application/json
' +
        'Authorization: Bearer {my access token}' +
        'User-Agent: @line/bot-sdk/7.0.0
' +
        'Content-Length: 147
' +
        'Host: api.line.me
' +
        'Connection: close
' +
        '
',
      _onPendingData: [Function: noopPendingOutput],
      agent: [Agent],
      socketPath: undefined,
      method: 'POST',
      insecureHTTPParser: undefined,
      path: '/v2/bot/message/reply',
      _ended: true,
      res: [IncomingMessage],
      aborted: false,
      timeoutCb: null,
      upgradeOrConnect: false,
      parser: null,
      maxHeadersCount: null,
      reusedSocket: false,
      _redirectable: [Writable],
      [Symbol(kCapture)]: false,
      [Symbol(kNeedDrain)]: false,
      [Symbol(corked)]: 0,
      [Symbol(kOutHeaders)]: [Object: null prototype]
    },
    response: {
      status: 400,
      statusText: 'Bad Request',
      headers: [Object],
      config: [Object],
      request: [ClientRequest],
      data: [Object]
    },
    isAxiosError: true,
    toJSON: [Function]
  }
}

Please look at this log and let me know where I am doing wrong?

I am also adding my code below

'use strict';
//const serverless = require('serverless-http');
const line = require('@line/bot-sdk');
const express = require('express');
const util = require('util');
const config = {
   channelAccessToken: 'my access token',
   channelSecret: 'my client secret'
};
const client = new line.Client(config);

exports.handler = (line.middleware(config), (req, res, callback) => {
  //const readFile = util.promisify(line.middleware(config));
  //await readFile;
  const events = req.events;
  Promise.all(events.map((event) => {
    return handleEvent(event).catch((error) => { console.log("Erorororo ",error);return null; });
  }))
    .then((result) => {
      console.log("result log", result);
      callback(null, {
        statusCode: 200,
        body: {}
      });
    });
});
async function handleEvent(event) {
  if (event.type !== 'message' || event.message.type !== 'text') {
    return Promise.resolve(null);
  }
  //console.log(event.message.text);
  var echo = {};
  if(event.message.text.toUpperCase() == "HELLO") {
     echo = { type: 'text', text: 'Hello World!!!' };
  }
  else {
    echo = { type: 'text', text: 'Thanks for using our services.' };
  }
  // use reply API
  return client.replyMessage(event.replyToken, echo);
}

シュークリーム · Answer

I think the rsponse body (i.e error.response.data) might contain an error description, and it should help you.

シュークリーム · Answer

It is not recommended to expose your access token in this site...

Q&A

client.replyMessage Bad Request 400