ECDSAUtil - Curve not supported: secp256k1 (1.3.132.0.10) Error on SDK

XML and business rules
1

I am facing ECDSAUtil - Curve not supported: secp256k1 (1.3.132.0.10) error when try to validate the XML invoice.

2

please do not use the private key that is being generated with the CSR, instead use the private key in the following path:SDK\Data\Certificates/ec-secp256k1-priv-key.pem

3

It was resolved by downgrading my Java version.

4

I am getting the same error , I am using the privateKey which was originally there (not the one generated with csr/ Also tried with the one generated with csr) ,
using the xml which is provided as an example in samples.

Can someone please suggest what could be the reason for this error: Curve not supported: secp256k1 (1.3.132.0.10)