Update app.py

app.py

@@ -94,8 +94,10 @@ def respond(message, history):
     refs = [f"Page {d.metadata.get('page', 'N/A')}" for d in docs]
     full_answer = f"{answer}\n\n**Refs:** {' | '.join(refs)}"
     
-    history.append([message, full_answer])
-    return history, ""
+    # Append in messages format
+    history.append({"role": "user", "content": message})
+    history.append({"role": "assistant", "content": full_answer})
+    return history
 #====================
 def extract_docx_text(file_path):
     doc = Document(file_path)
@@ -327,11 +329,13 @@ with gr.Blocks(css=css) as demo:
                         </div>"""
                    )
         with gr.TabItem("ChatBot-NRL manual-goods"):
-            gr.Markdown("# RAG Chatbot - procurement manual of Goods")
-            chatbot = gr.Chatbot(height=500, type="tuples")  # Explicit tuples format
-            msg = gr.Textbox(placeholder="Ask about GeM...", scale=4)
-            clear = gr.Button("Clear")
-            
-            msg.submit(respond, [msg, chatbot], [chatbot, msg])
-            clear.click(lambda: ([], ""), None, chatbot)
+                gr.Markdown("# RAG Chatbot with Page References")
+                chatbot = gr.Chatbot(height=500)  # No 'type' arg!
+                msg = gr.Textbox(placeholder="What is GeM?", scale=4)
+                submit = gr.Button("Send", scale=1)
+                clear = gr.Button("Clear")
+                
+                submit.click(respond, [msg, chatbot], [chatbot, msg])
+                msg.submit(respond, [msg, chatbot], [chatbot, msg])
+                clear.click(lambda: [], None, chatbot, queue=False)
 demo.queue().launch()