query_scrips() throwing error name 'Exch' is not defined

[maheshfs]

record = client.query_scrips("N","C","INFY","0","XX","")
02:59:53 | name 'Exch' is not defined

record = client.query_scrips("N","D","NIFTY","24300","CE","2025-10-28")
03:01:45 | name 'Exch' is not defined