Update.

src/snek/service/notification.py

@@ -33,6 +33,8 @@ class NotificationService(BaseService):
         channel_message = await self.services.channel_message.get(
             uid=channel_message_uid
         )
+        if not channel_message["is_final"]:
+            return 
         user = await self.services.user.get(uid=channel_message["user_uid"])
         self.app.db.begin()
         async for channel_member in self.services.channel_member.find(