diff --git a/server/routes/lark.py b/server/routes/lark.py
index 0489ddcb..e294c54d 100644
--- a/server/routes/lark.py
+++ b/server/routes/lark.py
@@ -1,6 +1,6 @@
 import os
 
-from app import app
+from app import app, session
 from connectai.lark.oauth import Server as OauthServerBase
 from connectai.lark.sdk import Bot, MarketBot
 from connectai.lark.webhook import LarkServer as LarkServerBase