Program: 8596
Project: 8596
Buggy source:
private void addReplyToTicket(String cancelTag,HSTicket ticket,HSUser user,final String message,String[] attachmentToken,final HSAttachment[] attachmentObjectList,RequestQueue queue,final OnFetchedSuccessListener successListener,final Response.ErrorListener errorListener){
  JSONObject ticketJson=null;
  try {
    ticketJson=retrieveRequestProperties(message,attachmentToken);
  }
 catch (  JSONException e) {
    e.printStackTrace();
    errorListener.onErrorResponse(new VolleyError("String_Node_Str"));
  }
  ZendeskJsonObjectRequest request=new ZendeskJsonObjectRequest(cancelTag,user.getEmail(),Request.Method.PUT,getApiUrl().concat("String_Node_Str").concat(ticket.getTicketId()).concat("String_Node_Str"),ticketJson,new ZendeskBaseListener<JSONObject>(successListener,errorListener){
    @Override public void onResponse(    JSONObject response){
      if (response == null) {
        this.errorListener.onErrorResponse(new VolleyError());
      }
 else {
        HSTicketUpdate update;
        String updateId=null;
        String userName=null;
        Date update_time=null;
        HSAttachment[] attachmentList=attachmentObjectList;
        try {
          JSONObject requestObject=response.getJSONObject("String_Node_Str");
          if (!requestObject.isNull("String_Node_Str")) {
            userName=requestObject.getString("String_Node_Str");
          }
          if (!requestObject.isNull("String_Node_Str")) {
            update_time=parseTime(requestObject.getString("String_Node_Str"));
          }
          update=HSTicketUpdate.createUpdateByUser(updateId,userName,message,update_time,attachmentList);
          successListener.onSuccess(update);
        }
 catch (        JSONException e) {
          e.printStackTrace();
          errorListener.onErrorResponse(new VolleyError("String_Node_Str"));
        }
      }
    }
  }
,errorListener);
  request.addCredential(staff_email_address,api_token);
  request.setTag(cancelTag);
  request.setRetryPolicy(new DefaultRetryPolicy(ZendeskJsonObjectRequest.TIMEOUT_MS,ZendeskJsonObjectRequest.MAX_RETRIES,ZendeskJsonObjectRequest.BACKOFF_MULT));
  queue.add(request);
  queue.start();
}

Fixed version (ground truth):
private void addReplyToTicket(String cancelTag,HSTicket ticket,HSUser user,final String message,String[] attachmentToken,final HSAttachment[] attachmentObjectList,RequestQueue queue,final OnFetchedSuccessListener successListener,final Response.ErrorListener errorListener){
  JSONObject ticketJson=null;
  try {
    ticketJson=retrieveRequestProperties(message,attachmentToken);
  }
 catch (  JSONException e) {
    e.printStackTrace();
    errorListener.onErrorResponse(new VolleyError("String_Node_Str"));
  }
  ZendeskJsonObjectRequest request=new ZendeskJsonObjectRequest(cancelTag,user.getEmail(),Request.Method.PUT,getApiUrl().concat("String_Node_Str").concat(ticket.getTicketId()).concat("String_Node_Str"),ticketJson,new ZendeskBaseListener<JSONObject>(successListener,errorListener){
    @Override public void onResponse(    JSONObject response){
      if (response == null) {
        this.errorListener.onErrorResponse(new VolleyError());
      }
 else {
        HSTicketUpdate update;
        String updateId=null;
        String userName=null;
        Date update_time=null;
        HSAttachment[] attachmentList=attachmentObjectList;
        try {
          JSONObject requestObject=response.getJSONObject("String_Node_Str");
          if (!requestObject.isNull("String_Node_Str")) {
            userName=requestObject.getString("String_Node_Str");
          }
          if (!requestObject.isNull("String_Node_Str")) {
            update_time=parseTime(requestObject.getString("String_Node_Str"));
          }
          update=HSTicketUpdate.createUpdateByUser(updateId,userName,message,update_time,attachmentList);
          successListener.onSuccess(update);
        }
 catch (        JSONException e) {
          e.printStackTrace();
          errorListener.onErrorResponse(new VolleyError("String_Node_Str"));
        }
      }
    }
  }
,errorListener);
  request.addCredential(user.getEmail(),api_token);
  request.setTag(cancelTag);
  request.setRetryPolicy(new DefaultRetryPolicy(ZendeskJsonObjectRequest.TIMEOUT_MS,ZendeskJsonObjectRequest.MAX_RETRIES,ZendeskJsonObjectRequest.BACKOFF_MULT));
  queue.add(request);
  queue.start();
}