Lesson 14: Error deploying RandomIpfsNft to Testnet

[JR-Vickers]

Hi,

I'm at the end of the lesson where we deploy the contract to Rinkeby/Goerli. The basic NFT and the Dynamic SVG NFT both deploy just fine, but I get an error when I get to the random SVG NFT:

My code can be found here.

[alymurtazamemon]

@JR-Vickers

// Random IPFS NFT
    const randomIpfsNft = await ethers.getContract("RandomIpfsNft", deployer)
    const mintFee = await randomIpfsNft.getMintFee()

    // Need to listen for response
    await new Promise(async (resolve, reject) => {
        setTimeout(resolve, 300000) // 5 minute timeout time
        // setup listener for our event
        randomIpfsNft.once("NftMinted", async () => {
            resolve()
        })
        const randomIpfsNftMintTx = await randomIpfsNft.requestNft({
            value: mintFee.toString(),
        })
        const randomIpfsNftMintTxReceipt = await randomIpfsNftMintTx.wait(1)
        if (developmentChains.includes(network.name)) {
            const requestId =
                randomIpfsNftMintTxReceipt.events[1].args.requestId.toString()
            const vrfCoordinatorV2Mock = await ethers.getContract(
                "VRFCoordinatorV2Mock",
                deployer
            )
            await vrfCoordinatorV2Mock.fulfillRandomWords(
                requestId,
                randomIpfsNft.address
            )
        }
    })
    console.log(
        `Random IPFS NFT index 0 tokenURI: ${await randomIpfsNft.tokenURI(0)}`
    )

const randomIpfsNftMintTx = await randomIpfsNft.requestNft({
            value: mintFee.toString(),
        })
const randomIpfsNftMintTxReceipt = await randomIpfsNftMintTx.wait(1)

These lines should be above promise

Updated code

// Random IPFS NFT
    const randomIpfsNft = await ethers.getContract("RandomIpfsNft", deployer)
    const mintFee = await randomIpfsNft.getMintFee()
     const randomIpfsNftMintTx = await randomIpfsNft.requestNft({
            value: mintFee.toString(),
        })
        const randomIpfsNftMintTxReceipt = await randomIpfsNftMintTx.wait(1)
    // Need to listen for response
    await new Promise(async (resolve, reject) => {
        setTimeout(resolve, 300000) // 5 minute timeout time
        // setup listener for our event
        randomIpfsNft.once("NftMinted", async () => {
            resolve()
        })
        if (developmentChains.includes(network.name)) {
            const requestId =
                randomIpfsNftMintTxReceipt.events[1].args.requestId.toString()
            const vrfCoordinatorV2Mock = await ethers.getContract(
                "VRFCoordinatorV2Mock",
                deployer
            )
            await vrfCoordinatorV2Mock.fulfillRandomWords(
                requestId,
                randomIpfsNft.address
            )
        }
    })
    console.log(
        `Random IPFS NFT index 0 tokenURI: ${await randomIpfsNft.tokenURI(0)}`
    )

[JR-Vickers]

I replaced my code with yours, but I still got an error:

updated repo.

[JR-Vickers]

Still getting "ERC721: invalid token ID" after deploying. Any help would be appreciated.

repo link

[santi-nihany]

hi @JR-Vickers, did you find any solution to this error?

[PGG106]

i'd suggest to doublecheck if the contract was added as a vrf consumer

[JHE208]

@JR-Vickers @santi-nihany Make sure your VRF subscribtion is funded with enough LINK. If there isn't enough it will be pending until the promise timesout and the mint will fail.

[VladislavKostadinov]

I had the same error. It was due to the fact that I have added the wrong Consumer at https://vrf.chain.link/.
I have added the wrong Contract Address as Consumer!
I removed the Consumer and added the correct Contract (RandomIpfs) as a new Consumer and after that deployed with
hh deploy --tags mint --network sepolia
and it worked.