old interface i got that error: Failed to execute ... @curvefi

Answer: If you are using a Ledger device to access Curve through Metamask, you may be encountering the error "Failed to execute 'claimInterface' on 'USBDevice': Unable to claim interface." This error can occur when the Ledger device is not properly connected or configured. To resolve this issue, you should try going through a wallet like Metamask or Frame to access Curve with the Ledger. Make sure to check that the Ledger device is properly connected and configured before attempting to access Curve. Additionally, you may need to update your Ledger device's firmware to the latest version in order to successfully access Curve.

you are using ledger through metamask?

Can you try going through a wallet like metamask or frame to access Curve with the ledger?