Lesson 7: TypeError: Cannot read property 'ethUsdPriceFeed' of undefined

[su-adam]

The contracts deploy with no issue when using local hose, however error arises when deploying to Rinkeby network

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

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

    let ethUsdPriceFeedAddress
    if (developmentChains.includes(network.name)) {
        const ethUsdAggregator = await deployments.get("MockV3Aggregator")
        ethUsdPriceFeedAddress = ethUsdAggregator.address
    } else {
        ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
    }
    log("----------------------------------------------------")
    log("Deploying FundMe and waiting for confirmations...")
    // log(ethUsdPriceFeed)
    const fundMe = await deploy("FundMe", {
        from: deployer,
        args: [ethUsdPriceFeedAddress],
        log: true,
        // we need to wait if on a live network so we can verify properly
        waitConfirmations: network.config.blockConfirmations || 1,
    })
    log(`FundMe deployed at ${fundMe.address}`)

    if (
        !developmentChains.includes(network.name) &&
        process.env.ETHERSCAN_API_KEY
    ) {
        await verify(fundMe.address, args) //args 
    }
}

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

Verify contract

const { run } = require("hardhat")

async function verify (contractAddress, args) {
    console.log("Verifying contract...")
    try {
        await run("verify:verify", {
            address: contractAddress,
            constructorArguments: args,
        })
    } catch (e) {
        if (e.message.toLowerCase().includes("already verified")) {
            console.log("Already verified!")
        } else {
            console.log(e)
        }
    }
}

module.exports = { verify }

[DorianDaSilva]

@su-adam If you are talking about deploy-mocks.js, below are a few observations comparing your script with mine.

From here it seems you have several issues:

| const { getNamedAccounts, deployments, network } = require("hardhat")
You don't need: getNamedAccounts, deployments

| const args = [ethUsdPriceFeedAddress];
missing before const fundMe, this define the args parameter in const fundMe
| args: args instead of args: [ethUsdPriceFeedAddress]

| log(`FundMe deployed at ${fundMe.address}`)
Not sure why you have this line

Also, have you imported the right networkConfig data for your networks in helper-hardhat-config.js?
| pricefeed
| chainId

[su-adam]

Hey, thanks for the reply, my deploy mocks is working find. The contract above is my deploy fundME that is not working

[coinfeigm]

I copied your deploy.js and it was running successfully. Could you please share your helper-hardhat-config.js file? The networkConfig should be declared like this:

const networkConfig = {
    4: {
        name: "rinkeby",
        ethUsdPriceFeed: "0x8A753747A1Fa494EC906cE90E9f37563A8AF630e",
    },
};

module.exports = {
    networkConfig,
};

[su-adam]

Here is my helper-config

const networkConfig = {
    4: {
        name: "rinkeby",
        ethUsdPriceFeed: 0x8a753747a1fa494ec906ce90e9f37563a8af630e,
    },
    137: {
        name: "polygon",
        ethUsdPriceFeed: 0xf9680d99d6c9589e2a93a78a04a279e509205945,
    },
}

const developmentChains = ["hardhat", "localhost"]
const DECIMALS = 8
const INITIAL_ANSWER = 200000000000

module.exports = {
    networkConfig,
    developmentChains,
    DECIMALS,
    INITIAL_ANSWER,
}

[coinfeigm]

Are you sure you are still getting the error on the title? I copied both files and the error should now be regarding the args constant which is not declared (just like @DorianDaSilva said):
const args = [ethUsdPriceFeedAddress];

[su-adam]

    const args = [ethUsdPriceFeedAddress];
    const fundMe = await deploy("FundMe", {
        from: deployer,
        args: args,
        log: true,
        // we need to wait if on a live network so we can verify properly
        waitConfirmations: network.config.blockConfirmations || 1,
    })

I have made the changes, and this is the error message i get now

Error: ERROR processing /mnt/c/Users/su-ad/Documents/hardhat-fund-me-fcc/deploy/01-deploy-fund-me.js:
Error: invalid address (argument="address", value=7.904547291129975e+47, code=INVALID_ARGUMENT, version=address/5.6.1) (argument="priceFeedAddress

[su-adam]

Thank you for your help, it didn't like in include word in my deployment scripts