How to put NFT on sale

[crypto-pepe-dev]

I'm trying to adapt a sale from an auction.

My app crashed on await nftFixedPriceV3.getSaleData() with Error: Exit code: -256

What is my mistake?

export enum ENDPOINT {
    MAINNET = 'https://mainnet-v4.tonhubapi.com',
    TESTNET = 'https://sandbox-v4.tonhubapi.com',
}

   let keypair = await mnemonicToPrivateKey(seed.split(" "));

    let client = new TonClient4({endpoint: ENDPOINT.TESTNET})

    let wallet = await createSender(keypair, client)

    let defaultConfig: NftFixPriceSaleV3Data = {
        isComplete: false,
        fullPrice: toNano(price),
        nftAddress: Address.parse(nftAddress),
        nftOwnerAddress: Address.parse(ownerAddress),
        royaltyAddress: Address.parse(ownerAddress),
        royaltyAmount: toNano(price),
        marketplaceAddress: Address.parse(marketAddress),
        marketplaceFeeAddress: Address.parse(marketFeeAddress),
        marketplaceFee: toNano('0.05'),
        createdAt: moment().unix(),
        canDeployByExternal: true,
    }

    const nftFixedPriceV3 = client.open(
        await NftFixedPriceV3.createFromConfig(defaultConfig)
    )

    await nftFixedPriceV3.sendDeploy(wallet, toNano('0.05'))

    const data = await nftFixedPriceV3.getSaleData()

    console.log(data);

Also about marketFeeAddress and marketFeeAddress. Where can I get them?