"Cannot read properties of undefined" error

[Mayank-Pandey1]

I get this error when I try to run the following command:

yarn hardhat deploy --network goerli

Error: ERROR processing /root/practicefolder/hardhat-fund-me-2/deploy/01-deploy-fund-me.js:
TypeError: Cannot read properties of undefined (reading 'ethUsdPriceFeed')
    at Object.module.exports [as func] (/root/practicefolder/hardhat-fund-me-2/deploy/01-deploy-fund-me.js:32:56)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)

Here is my 01-deploy-fund-me.js code:

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

module.exports = async ({ getNamedAccounts, deployments }) => {
    const { deploy, log } = deployments; //getting variables from deployments object
    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"];
    }

    //when working with localhost or hardhat we will create a mock.

    //Mocking is primarily used in unit testing. An object under test may have dependencies on other (complex) objects.
    //To isolate the behaviour of the object you want to test you replace the other objects by mocks that simulate
    //the behaviour of the real objects. This is useful if the real objects are impractical to incorporate into the
    //unit test.

    //In short, mocking is creating objects that simulate the behaviour of real objects.

    const args = [ethUsdPriceFeedAddress];

    const fundMe = await deploy("FundMe", {
        from: deployer,
        args: args, //put priceFeed Address here
        log: true,
        waitConfirmations: network.config.blockConfirmations || 1,
    });

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

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

and below is my helper-hardhat-config.js code:

const networkConfig = {
    5: {
        name: "goerli",
        ethUsdPriceFeed: "0xD4a33860578De61DBAbDc8BFdb98FD742fA7028e",
    },
    11155111: {
        name: "sepolia",
        ethUsdPriceFeed: "0x694AA1769357215DE4FAC081bf1f309aDC325306",
    },
    1: {
        name: "mainnet",
        ethUsdPriceFeed: "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",
    },
};

const DECIMALS = 8;
const INITIAL_ANSWER = 200000000000;

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

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

[alymurtazamemon]

@Mayank-Pandey1 console log the chainId before if-else statement and let me know the result.

[Mayank-Pandey1]

It gives undefined

[alymurtazamemon]

@Mayank-Pandey1 then you need to add chain ids in the hardhat config file for each network. Also leave your repository link so I can see other things.

[Mayank-Pandey1]

I solved the issue, I had not specified the default hardhat network in hardhat config

[Mr-Saade]

hardhat is automatically default if not specified so how did this solve the issue as I'm facing the exact same issue here and unable to debug the error.

[tusharr1411]

getting same error. Did you resolve it ?

[48cork]

In my case The button console isn't shown

[Mayank-Pandey1]

Kindly elaborate