Error: failed to get chainId, falling back on net_version... ConnectTimeoutError: Connect Timeout Error

[PhilRandWu]

Lesson

Lesson 13

Could you please leave a link to the timestamp in the video where this error occurs? (You can right click a video and "copy video URL at current time")

No response

Operating System

Windows

Describe the bug

// hardhat.config.ts

hardhat: {
            chainId: 31337,
            forking: {
                url: MAINNET_RPC_URL,
                blockNumber: 14390000
            },
        },
MAINNET_RPC_URL = https://mainnet.infura.io/v3/key

// network.config.ts

  31337: {
        name: "localhost",
        wethToken: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
        lendingPoolAddressesProvider: "0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5",
        daiEthPriceFeed: "0x773616E4d11A78F511299002da57A0a94577F1f4",
        daiToken: "0x6b175474e89094c44da98b954eedeac495271d0f",
    },

It's just a call to the getWeth function，then Error: failed to get chainId, falling back on net_version... ConnectTimeoutError: Connect Timeout Error

[caducus7]

I'm having the exact same issue on Lesson 07, when trying to deploy on Sepolia for the first time. I've been searching around but can't find a reason for this or tinker my way through to get the chainId, by defining anywhere else.

//hardhat-config.js

require("@nomicfoundation/hardhat-toolbox")
require("dotenv").config
require("@nomicfoundation/hardhat-verify")
require("hardhat-gas-reporter")
require("solidity-coverage")
require("hardhat-deploy")

/** @type import('hardhat/config').HardhatUserConfig */
const SEPOLIA_RPC_URL =
    process.env.SEPOLIA_RPC_URL ||
    "https://eth-sepolia.g.alchemy.com/v2/myappkey"
const PRIVATE_KEY =
    process.env.PRIVATE_KEY ||
    "myprivatekey"
const ETHERSCAN_API_KEY =
    process.env.ETHERSCAN_API_KEY || "etherscanapikey"
const COINMARKETCAP_API_KEY =
    process.env.COINMARKETCAP_API_KEY || "coimarketcapkey"

module.exports = {
    solidity: {
        compilers: [{ version: "0.8.8" }, { version: "0.6.6" }],
    },
    defaultNetwork: "hardhat",
    networks: {
        sepolia: {
            url: SEPOLIA_RPC_URL,
            chainId: 11155111,
            accounts: [PRIVATE_KEY],
            blockConfirmations: 6,
        },
        hardhat: {
            chainId: 31337,
        },
    },

//helper-hardhat-config if relevant

const networkConfig = {
    31337: {
        name: "localhost",
    },
    // Price Feed Address, values can be obtained at https://docs.chain.link/data-feeds/price-feeds/addresses
    11155111: {
        name: "sepolia",
        ethUsdPriceFeed: "0x694AA1769357215DE4FAC081bf1f309aDC325306",
    },
}

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

module.exports = { networkConfig, developmentChains }

//01-deploy-fund-me relevant chainId code

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

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

    let ethUsdPriceFeedAddress
    if (chainId == 31337) {
        const ethUsdAggregator = await deployments.get("MockV3Aggregator")
        ethUsdPriceFeedAddress = ethUsdAggregator.address
    } else {
        ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"]
    }