Update app.py

app.py

@@ -93,7 +93,7 @@ def ask_question(message, history):
         except Exception as e:
             answer = f"Error:{str(e)}"
     history.append((message, answer))
-    return history, history
+    return history, history, ""
 # Building Gradio Interface
 with gr.Blocks() as demo:
     gr.Markdown("## Chat with your pdf!!")
@@ -110,7 +110,7 @@ with gr.Blocks() as demo:
 
     file_input.change(upload_pdf, inputs=[file_input], outputs=[status])
     msg.submit(ask_question, [msg, state], [chatbot, state])
-    clear.click(lambda: ([],[]), None, [chatbot, state])
+    clear.click(lambda: ([],[]), None, [chatbot, state, msg])
     chain = None  # global QA chain
 
 # Launch the app