From d6dbf93210b6482cbc6dc42683d75429d6a1144a Mon Sep 17 00:00:00 2001
From: Simba Zhang <solderzzc@gmail.com>
Date: Mon, 17 Dec 2018 13:35:04 -0800
Subject: [PATCH] Skipped faces in recognized list are 'null'. need to be
 filtered out. This bug should not be an issue since known result always be in
 front of empty ones.

---
 src/detector/timeline.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/detector/timeline.js b/src/detector/timeline.js
index 782a6857..4939cc3c 100644
--- a/src/detector/timeline.js
+++ b/src/detector/timeline.js
@@ -79,6 +79,10 @@ function generate_known_person_message(tracker_id,recognition_results){
   get_device_uuid(function(uuid){
     get_device_group_id(function(group_id){
       recognition_results.forEach(function(item){
+        if(!item){
+          console.log('one empty item in recognition_results, might be skipped when has known person recognized')
+          return
+        }
         var result = item.result
         if(result && result.recognized === true && result.face_id ){
           var person_info = {