EDIT : delete token

 var express = require('express');
 const request = require('request');
 const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
-const TOKEN = 'zVAczqoJ+L9oykqhEj7HoP7f6Nyb+R3T1TntHXQhYihI+KIxH4SZDGpKu0jKsMXMHKBVXpmbybA+oaV8u/dfLppKe3NHXU9AdBVypy9NgfWiFPLlcwm3GdkVPAZGoS4nvOCXWDKUb+ixPKWjlbnChAdB04t89/1O/w1cDnyilFU='
+const TOKEN = ''
 const fs = require('fs');
 const path = require('path');
 const HTTPS = require('https');
@@ -55,7 +55,7 @@ app.post('/hook', function (req, res) {
     var db = mysql.createConnection({
         host: 'chatbot.c7fzgftc3yrm.us-east-1.rds.amazonaws.com',
         user: 'chatbot',
-        password: '11111111',
+        password: '',
         database: 'chatbot',
         port: '3306'
     });