another update

app.py

@@ -122,7 +122,8 @@ def generate_response(audio_path, message, chat_history=None):
         if chat_history:
             history_limit = min(len(chat_history), 3)
             for user_msg, bot_msg in chat_history[-history_limit:]:
-                conversation.append({"role": "user", "content": user_msg})
+                if user_msg:  # Skip None entries
+                    conversation.append({"role": "user", "content": user_msg})
                 if bot_msg and bot_msg != "⏳ Generating response, please wait...":
                     conversation.append({"role": "assistant", "content": bot_msg})
 
@@ -207,7 +208,7 @@ def create_interface():
         with gr.Row():
             with gr.Column(scale=2):
                 # Chat interface
-                chatbot = gr.Chatbot(height=400, label="Conversation", type="messages")
+                chatbot = gr.Chatbot(height=400, label="Conversation")
                 
                 with gr.Row():
                     msg = gr.Textbox(