Lesson 9: Error deploying lottery contract

[Avelous]

I am having this error when deploying my lottery contracts. please help

Error: invalid BigNumber value (argument="value", value=undefined, code=INVALID_ARGUMENT, version=bignumber/5.6.2)

I assume its an issue with my arguments but don't seem to find the exact problem

These are my codes

01-deploy-lottery.js

const { networkConfig, developmentChains } = require("../helper-hardhat-config")
const { network, ethers } = require("hardhat")
const { verify } = require("../utils/verify")

const VRF_SUB_FUND_AMOUNT = ethers.utils.parseEther("2")

module.exports = async function ({ getNamedAccounts, deployments }) {
    const { deploy, log } = deployments
    const { deployer } = await getNamedAccounts()
    const chainId = network.config.chainId
    let vrfCoordinatorV2Address, subscriptionId

    if (developmentChains.includes(network.name)) {
        const vrfCoordinatorV2Mock = await ethers.getContract(
            "VRFCoordinatorV2Mock"
        )
        vrfCoordinatorV2Address = vrfCoordinatorV2Mock.address
        const transactionResponse =
            await vrfCoordinatorV2Mock.createSubscription()
        const transactionReceipt = await transactionResponse.wait(1)
        const subscriptionId = transactionReceipt.events[0].args.subId
        await vrfCoordinatorV2Mock.fundSubscription(
            subscriptionId,
            VRF_SUB_FUND_AMOUNT
        )
    } else {
        vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"]
        subscriptionId = networkConfig[chainId]["subscriptionId"]
    }

    const entranceFee = networkConfig[chainId]["entranceFee"]
    const gasLane = networkConfig[chainId]["gasLane"]
    const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"]
    const interval = networkConfig[chainId]["interval"]

    const args = [
        vrfCoordinatorV2Address,
        entranceFee,
        gasLane,
        subscriptionId,
        callbackGasLimit,
        interval,
    ]

    const lottery = await deploy("Lottery", {
        from: deployer,
        args: args,
        log: true,
        waitConfirmations: network.config.blockConfirmations || 1,
    })

    if (
        !developmentChains.includes(network.name) &&
        process.env.ETHERSCAN_API_KEY
    ) {
        log("Verifying...")
        await verify(raffle.address, args)
        log("================================================================ ")
    }
}

module.exports.tags = ["all", "lottery"]

helper-hardat.config.js

const { ethers } = require("hardhat")

const networkConfig = {
    4: {
        name: "rinkeby",
        vrfCoordinatorV2: "0x6168499c0cFfCaCD319c818142124B7A15E857ab",
        entranceFee: ethers.utils.parseEther("0.1"),
        gasLane:
            "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc",
        subscriptionId: "0",
        callbackGasLimit: "500000",
        interval: "30",
    },
    31337: {
        name: "hardhat",
        entranceFee: ethers.utils.parseEther("0.1"),
        gasLane:
            "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc",
        callbackGasLimit: "500000",
        interval: "30",
    },
}

const developmentChains = ["hardhat", "localhost"]

module.exports = {
    networkConfig,
    developmentChains,
}

[mattjaf]

does it deploy on rinkeby?
or is this only an issue when you try deploying to hardhat?

[Avelous]

yes, it deploys on rinkeby

[krakxn]

The problem lies in helper-hardat.config.js; copy paste my following code precisely, create a subscription ID as Patrick explains in the course, and put it in subscriptionId below, that will certainly fix the problem.

4: {
        name: "rinkeby",
        subscriptionId: // create subscription
        gasLane: "0xd89b2bf150e3b9e13446986e571fb9cab24b13cea0a43ea20a6049a85cc807cc", 
        keepersUpdateInterval: "30",
        raffleEntranceFee: "100000000000000000", // 0.1 ETH
        callbackGasLimit: "500000", // 500,000 gas
        vrfCoordinatorV2: "0x6168499c0cFfCaCD319c818142124B7A15E857ab",
    },

Let me know how it goes!

[Avelous]

tried it, same error. I got the error while deploying to hardhat and not rinkeby

[Avelous]

I found a solution here: #575

The issues were with the args