Update main.py

main.py

@@ -194,6 +194,7 @@ async def sms_posts(instance: ResultItem, idx: str = None, action: str = "add")
                     await session.commit()                    
                 else: # update
                     vars(existing).update(vars(instance))
+                    session.add(existing)  # Not asynchronous
                     await session.commit()
                     await session.refresh(existing)
                     result = existing