Unit redeemer

[ajuggler]

I am building a transaction which contains a minting script mint_script which assumes a unit redeemer. If I use either

tx_builder.add_minting_script(mint_script)

or

tx_builder.add_minting_script(mint_script, redeemer=None)

I get the error

AttributeError: 'NoneType' object has no attribute 'index'

which seems to indicate that I need to explicitly pass a unit redeemer.

I tried

tx_builder.add_minting_script(mint_script, redeemer=Redeemer(None))

but that did not work. How do I pass a unit redeemer?

[cffls]

Maybe try Redeemer(PlutusData()) or Redeemer(RawCBOR(bytes.fromhex("d87a80")))

[ajuggler]

Redeemer(PlutusData()) seems to work fine. Thanks!