diff --git a/js/community/components/subjectPost/SPLikeCell.js b/js/community/components/subjectPost/SPLikeCell.js
index fa26a1f..1a79794 100644
--- a/js/community/components/subjectPost/SPLikeCell.js
+++ b/js/community/components/subjectPost/SPLikeCell.js
@@ -41,7 +41,7 @@ export default class SPLikeCell extends React.Component {
             return (
                 <View style={[styles.avatarPannel, {left}]}>
                     {users.map((item, i)=> {
-                        let headStr = item.headIcon||'';
+                        let headStr = item && item.headIcon ? item.headIcon : '';
                         return (
                             <SlicedImage key={i} style={[styles.likeAvatar, {right: space * i}]} source={{uri: headStr}}/>
                         );
diff --git a/js/community/reducers/app/appActions.js b/js/community/reducers/app/appActions.js
index e5de96d..3f154a0 100755
--- a/js/community/reducers/app/appActions.js
+++ b/js/community/reducers/app/appActions.js
@@ -11,6 +11,7 @@ import {Actions} from 'react-native-router-flux';
 import Immutable, {Map} from 'immutable';
 import AppService from '../../services/AppService';
 import RouterService from '../../services/RouterService';
+import {loginThenSyncUserInfo} from '../user/userActions';
 
 const {
 	SET_PLATFORM,