Update app.py

app.py

@@ -24,8 +24,9 @@ html_card="""
 
 
 def get_screenshot(chat,css=None):
+    print(chat)
     html_body=""
-    for user,bot in history:
+    for user,bot in chat:
         print (f'user::{user}')
         print (f'bot::{bot}')
         html_body += html_user.format(chat=user)