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I'm trying to implement lock and withdraw of an NFT, but when I tried to check the signer on-chain with the function:
signer :: PubKeyHash
signer = case txInfoSignatories (scriptContextTxInfo ctx) of
[pkh] -> pkh
_ -> traceError "Signer could not be found."
It gets always signer could not be found. Why it is not found? It worked on playground until today, but I don't know if there were some updates on plutus.
Make sure the transaction has the correct required witness.
It worked on playground until today
It sounds like you had this working at some point but now you don't, what's changed? There have been no changes to that repo for a few days now. Try finding the exact commit that supposedly broke this.
when I tried to check the signer on-chain Blockquote
If you're using a real blockchain network then perhaps you're using cardano-cli? You need to build a transaction with required-signer flag.
