MissingMethodException

[bc-maker]

I'm trying to sign a transaction but the EncodeForSigning method can't be found (I can see it in the object explorer)

System.MissingMethodException
HResult=0x80131513
Message=Method not found: 'System.String Xrpl.BinaryCodec.XrplBinaryCodec.EncodeForSigning(System.Collections.Generic.Dictionary2<System.String,System.Object>)'. Source=Xrpl StackTrace: at Xrpl.Wallet.XrplWallet.ComputeSignature(Dictionary2 transaction, String privateKey, String signAs)
at Xrpl.Wallet.XrplWallet.Sign(Dictionary`2 transaction, Boolean multisign, String signingFor)
at Xrpl.Sugar.SubmitSugar.d__2.MoveNext()
at Xrpl.Sugar.SubmitSugar.d__0.MoveNext()

Any advice of how to solve?
Or anybody else having this issue?

[dangell7]

Can you show me your code?