错误代码修正，修改引用信息

src/server/endpoints/v2/session.endpoint.js

@@ -223,7 +223,7 @@ router.get(APIv2.Sessions.Messages, function (req, res) {
router.get(APIv2.Sessions.SessionUnreadMessages, function (req, res) {
    let sessionId = req.params.session_id;
    let userId = req.query.User_id;
    let userId = req.query.user_id;
    let sessions = new Sessions();
    ControllerUtil.regModelEventHandler(sessions, res);

src/server/models/sessions/sessions.js

@@ -423,13 +423,7 @@ class Sessions extends RedisModel {
                    .then(function (res) {
                        let messages = [];
                        res.forEach(function (message) {
                            messages.push({
                                sender_id: message.sender_id,
                                sender_name: message.sender_name,
                                content_type: message.content_type,
                                content: message.content,
                                timestamp: ObjectUtil.timestampToLong(message.timestamp)
                            });
                            messages.push(message);
                        });
                        ModelUtil.emitOK(self.eventEmitter, messages);