Cannot pass undefined to makeKeyRegistrationTxn function for typescript

[thdung3]

Cannot pass undefined to makeKeyRegistrationTxn function for typescript

I use makeKeyRegistrationTxn to register offline. As documents, i set undefined for voteKey, selectionKey, stateProofKey but voteKey, selectionKey, stateProofKey define as string.

Could you update type of voteKey, selectionKey, stateProofKey like string | undefined or give me exactly params i should put into makeKeyRegistrationTxn to register offline

Thanks