diff --git a/app.py b/app.py
index 7ba439e..a8bf2aa 100644
--- a/app.py
+++ b/app.py
@@ -23,9 +23,8 @@ def getRedisConn(self):
                     redisConn.connect()
                     self.redisConn = redisConn
                 return self.redisConn
-            except Exception:
+            except:
                 self.redisConn = None
-                raise
         def getSMTPConn(self):
             try:
                 import smtplib
diff --git a/models.py b/models.py
index d179f45..cd6ee82 100644
--- a/models.py
+++ b/models.py
@@ -36,7 +36,7 @@ def send(self):
 
 class WeiXinQYMessage(Message):
     def __init__(self, redisConn, title="", content="", **qywxSettings):
-        super(WeiXinQYMessage, self).__init__(title, content)
+        super(WeiXinQYMessage, self).__init__(title=title, content=content)
         self.baseUrl = qywxSettings.get("baseUrl")
         self.corpid = qywxSettings.get("corpid")
         self.corpsecret = qywxSettings.get("corpsecret")
@@ -62,7 +62,10 @@ def refreshToken(self):
             return ""
         try:
             accessToken = json.loads(response.body).get("access_token")
-            yield tornado.gen.Task(self.__redis.setex, redisKeys["WXQY_ACCESS_TOKEN"], 7200, accessToken)
+            try:
+                yield tornado.gen.Task(self.__redis.setex, redisKeys["WXQY_ACCESS_TOKEN"], 7200, accessToken)
+            except:
+                pass
             return accessToken
         except json.JSONDecodeError:
             print("JSON decode error, fail to get access_token.")