Update main.py

main.py

@@ -175,6 +175,7 @@ async def sms_posts(instance: ResultItem, idx: str = None, action: str = "add")
     async with AsyncSession(sms_resource["engine"]) as session:
         code = 1
         error = None
+        result = None
         existing = await session.get(instance.__class__, idx)
 
         # For add action, do db operation if instance is not existing. Other actions, do db operation if instance exists in db
@@ -184,8 +185,7 @@ async def sms_posts(instance: ResultItem, idx: str = None, action: str = "add")
             if checker:
                 if action == "delete":
                     await session.delete(instance)
-                    await session.commit()
-                    result = None
+                    await session.commit()                    
                 else:  # add or update use add
                     session.add(instance) # Not asynchronous
                     await session.commit()