Scriptwitnessnotvalidating error during nft mint

Hi,

Im working my NFT mint script and during tx sign i get back an error : scriptwitnessnotvalidating UTXOW.

Have someone idea what is the meaning of this error?

thank you

See if this resolves the problem:

I have seen this topic.
I think the in policy.script shows when will policyID locked so no new nft can be created with the given policyID

on the other hand,

invalid-hereafter shows till what time the transaction can run.

I use the cardano-developer tutorial to create mint script, first time everything went smootly, but now I got 10 times already this error.
Command failed: transaction submit Error: Error while submitting tx: ShelleyTxValidationError ShelleyBasedEraAlonzo (ApplyTxError [UtxowFailure (WrappedShelleyEraFailure (ScriptWitnessNotValidatingUTXOW (fromList [ScriptHash “626713e713851f55dc37abad636935708ca2f60de77c44888abc4578”])))])

Sorry my bad. The sign transaction needs two skeys : payment and policy

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