Update app.js

@@ -82,7 +82,7 @@ function handleEvent(event) {
   }
   }
   else if (event.type == 'message'&& event.message.type == 'image') {
   else if (event.type == 'message'&& event.message.type == 'image') {
     return new Promise((resolve,reject)=>{
     return new Promise((resolve,reject)=>{
-      client.replyMessage(event.replyToken,event.message.image).then(resolve).catch(reject);
+      client.replyMessage(event.replyToken,event.message).then(resolve).catch(reject);
       /*console.log("!");
       /*console.log("!");
       var cheerio = require('cheerio');
       var cheerio = require('cheerio');