Update app.py

app.py

@@ -75,26 +75,22 @@ async def echo(message, history, state, persona, use_generated_summaries):
             user_message_parts = [types.Part.from_text(text=message['text'])]
             if attached_file: user_message_parts.append(attached_file)
             user_message = [types.Content(role='user', parts=user_message_parts)]
-            
-            model_contents = state['messages']
             state['messages'] = model_contents + user_message
 
             model_content_stream = await client.models.generate_content_stream(
                 model=args.model, 
-                contents=model_contents, 
+                contents=state['messages'], 
                 config=types.GenerateContentConfig(seed=args.seed),
             )    
     else:
         user_message_parts = [types.Part.from_text(text=message['text'])]
         if attached_file: user_message_parts.append(attached_file)
         user_message = [types.Content(role='user', parts=user_message_parts)]
-        
-        model_contents = state['messages']
         state['messages'] = model_contents + user_message
 
         model_content_stream = await client.models.generate_content_stream(
             model=args.model, 
-            contents=model_contents, 
+            contents=state['messages'], 
             config=types.GenerateContentConfig(seed=args.seed),
         )