Update app.py

app.py

@@ -82,9 +82,9 @@ def launch_interface():
         
         process_btn.click(process_pdf, inputs=[pdf_uploader], outputs=[process_output])
         
-        # Create chat interface
+        # Create chat interface with correct argument handling
         chatbot = gr.ChatInterface(
-            lambda message: query_rag(message, 0.7, 10000, 40, 1.1, 0.95, "You are a helpful assistant.")
+            lambda message, history: query_rag(message, 0.7, 10000, 40, 1.1, 0.95, "You are a helpful assistant.", history)
         )
 
     demo.launch(share=True)  # Enable public link