InvalidSignature on latest testnet 0.29.1

[neshala]

Is there anything that can be done to fix sign process, latest testnet version 0.29.1 report this error with previosly working code:
Maybe it's relted to blake2b changes, not sure.

    "error": {
        "code": -32000,
        "message": "Invalid user signature: InvalidSignature { error: \"Invalid signature was given to the function\" }."
    }

[neshala]

Could be related to this

[API breaking change] A valid signature must be committed to the Blake2b hash of the message before passing to any signing APIs. If a signature is created elsewhere, please ensure the transaction data is hashed first. See https://github.com/MystenLabs/sui/pull/9561

MystenLabs/sui#9561

[0xJayShen]

The same
code below

privKeyBytes, err := hex.DecodeString("xxxxxx")
	if err != nil {
		return "", err
	}
	privateKey := ed25519.NewKeyFromSeed(privKeyBytes)
	resp, err := cli.ExecuteSignedTransaction(
		context.Background(),
		*txSinged.SignSerializedSigWith(privateKey),
		&types.SuiTransactionBlockResponseOptions{ShowInput: true, ShowEffects: true, ShowEvents: true, ShowObjectChanges: true, ShowBalanceChanges: true},
		types.TxnRequestTypeWaitForLocalExecution)
	if err != nil {
		return "", err
	}

[Gkirito]

Please use the v2 version and try it again