Update app.py

app.py

@@ -798,7 +798,7 @@ def handle_dislike(data: gr.LikeData):
 def update_message(request: gr.Request):
     return f"<h2 style=' font-family: Calibri;'>Welcome, {request.username}</h4>"
 
-def send_mail_with_history(req: gr.Request, chatbot):
+def send_mail_with_history(req: gr.Request,chatbot):
     if req.username:
        send_email_with_attachment_mailjet("lakshmivairamani@gmail.com","conversation history" + req.username, chatbot)  
 
@@ -897,6 +897,6 @@ with gr.Blocks(css=css, theme=gr.themes.Soft()) as demo:
     sample_button3.click(handle_query, [sample_button3, chatbot], [chatbot])
     sample_button4.click(handle_query, [sample_button4, chatbot], [chatbot])
 
-    demo.unload(send_mail_with_history,chatbot,None)
+    demo.unload(send_mail_with_history(chatbot))
 #user_details for login page
 demo.launch(auth=[("lakshmi", "redmind"), ("arun", "redmind")])