Unable to open Ledger with Sparow Wallet

Hi all,

I am unable to open my ledger with sparrow wallet.
I have installed the udev rules as specified here.
When I run the command ./hwi.py enumerate, i get the same error with an error code as when I am scanning the device with sparrow.
Could not open client or get fingerprint information: open failed", “code”: -13
What am I missing or what else should I check?

thanks a lot