gradio text box xhange

app.py

@@ -201,8 +201,10 @@ with gr.Blocks(title="Contextual RAG Chatbot on Hugging Face Spaces") as demo:
     # Submit handler to process user input and update the chatbot
     def respond(message, chat_history, hf_token_from_textbox):
         # The wrapper function now correctly receives the token from the text box
+        user_message_text = message.get("text") or "File uploaded."
+
         response = gradio_rag_wrapper(message, chat_history, hf_token_from_textbox)
-        chat_history.append((message, response))
+        chat_history.append((user_message_text, response))
         return "", chat_history
     
     # Define the submit event to call the respond function