ScriptWitnessNotValidatingUTXOW while trying to mint NFT in preprod testnet

Question

minting script

    "type": "all",
    "scripts":
    [   
        {
            "type": "after",
            "slot": 155761
        },
        {
            "type": "sig",
            "keyHash": "e9ce8633aef95b632bfbffc12a83cc4c589132c46cd03f8dae146ec2"
        }
     
    ]
}

metadata-json-file

    "721": {
        "ca8fc6bf8d698d5752e6c700c8a5818c2abe5a17877121ae99604e24": {
            "cat": {
                "name": "Nikki",
                "image": ["ipfs://QmQQqHaitxGkzNTRCSxJxTU5JaVvSoGGxocBcU246BZA7M"],
                "mediaType": "image/png",
                "description": "remember when?",
                "files": [
                    {
                        "mediaType": "image/png",
                        "src": ["ipfs://QmQQqHaitxGkzNTRCSxJxTU5JaVvSoGGxocBcU246BZA7M"]
                    },
                    {
                        "mediaType": "image/png",
                        "src": ["ipfs://QmYCbn5Nj3Xq28QwDkerMBAXsLBDa26f1k8jruuKn5gzXn"]
                    }
                    
                ],
                "type": "Nadan",
                "color": "white and brown"
            }
        }
    }
}

cardano-cli query tip --testnet-magic 1

{
    "block": 153845,
    "epoch": 19,
    "era": "Alonzo",
    "hash": "789909e77ba308c069b0e09809a6ec7508da0d2c0c474565caed2688afe3618e",
    "slot": 6674546,
    "syncProgress": "100.00"
}

command line variables

POLICYID=ca8fc6bf8d698d5752e6c700c8a5818c2abe5a17877121ae99604e24
TXIN="02a037b9649eb62f17549bf33114763568b59a4be20beba6132f7b996a0825e2#0"
TOKENNAME1="6e696b6b69"
POLICYSCRIPT="ppbl-nft-2.script"
MINTER=addr_test1vr5uap3n4mu4kcetl0luz25re3x93yfjc3kdq0ud4c2xassvq0wsd
METADATA_JSON_FILE="mynft.json"
RECIEVER=addr_test1qzdquurtx940tpyfgt7pu2h8zgrgfepf7quwcqqh3kmacd83z2naq8a2cltaqyxexml30wh77uyu3sll7feyp2nzqgnqfdpnsa

// transaction cardano-cli transaction build \ --alonzo-era \ --testnet-magic 1 \ --tx-in $TXIN \ --tx-out $RECIEVER+1500000+"1 $POLICYID.$TOKENNAME" \ --change-address $MINTER \ --mint "1 $POLICYID.$TOKENNAME" \ --minting-script-file ppbl-nft-2.script \ --metadata-json-file mynft.json \ --protocol-params-file protocol.json \ --out-file nft.raw

//transaction sign

cardano-cli transaction sign \
--signing-key-file payment.skey \
--testnet-magic 1 \
--tx-body-file nft.raw \
--out-file mint-nft.signed

//submit transaction

cardano-cli transaction submit \
--tx-file mint-nft.signed \
--testnet-magic 1

ERROR

Command failed: transaction submit  Error: Error while submitting tx: ShelleyTxValidationError ShelleyBasedEraAlonzo (ApplyTxError [UtxowFailure (WrappedShelleyEraFailure (ScriptWitnessNotValidatingUTXOW (fromList [ScriptHash "c867c502e249d681b35a8df2e3df5e58ec2c16d3df445429484a1793"])))])

Answer 1

You are using,

{
    "type": "after",
    "slot": 155761
}

while the current slot on preprod is ~154042. This policy allows using it only after slot 155761, for more info see (1). Also make sure that,

cardano-cli address key-hash --payment-verification-key-file payment.skey

is equal to e9ce8633aef95b632bfbffc12a83cc4c589132c46cd03f8dae146ec2.

Answer 2

You're missing the --invalid-before flag when building the transaction. It sets the lower bound of the transaction's validity interval, which is required for the script to determine whether the interval range is greater than slot 155761. You must use a slot that is lower than the current slot.