Update app.js

@@ -105,8 +105,8 @@ async function handleEvent(event) {
         text='';
         while(jsonResponse.indexOf('text')!=-1)
         {
-          jsonResponse=jsonResponse.substring(jsonResponse.indexOf('text')+6);
-          text+=jsonResponse.substring(0,jsonResponse.indexOf("}"))+" ";
+          jsonResponse=jsonResponse.substring(jsonResponse.indexOf('text')+7);
+          text+=jsonResponse.substring(0,jsonResponse.indexOf("}")-1)+" ";
 
         }
         console.log("text:"+text);
@@ -131,6 +131,7 @@ async function handleEvent(event) {
               if(songList[i].singer!=''){
                 result+=songList[i].singer+", "+songList[i].song+"\n";
               }
+              console.log(result);
             }
             client.replyMessage(event.replyToken,result).then(resolve).catch(reject);
           });