0.4.3 Path parameter "number" value must not be null. (parameter #2)

[AdelaDella]

Exception in thread "main" java.lang.IllegalArgumentException: Path parameter "number" value must not be null. (parameter #2)

[satran004]

@BlockByteMath Can you please add the full stack trace here?

FYI, the high-level API in library is going to be deprecated in 0.5.0. If this is not existing code, you should use the Composable function API. Here's a getting started guide https://cardano-client.dev/docs/gettingstarted/simple-transfer and you can find many examples in example repo.

If you are using 0.5.0-alpha.4, you can also try the new Quick Tx API which provides a simple and declarative API. You can find many examples in integration tests (https://github.com/bloxbean/cardano-client-lib/blob/master/quicktx/src/it/java/com/bloxbean/cardano/client/quicktx/QuickTxBuilderIT.java)