httpprovidererror related to rpc_url

[mayankmalhan123]

ProviderError: HttpProviderError
    at HttpProvider.request (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/providers/http.ts:78:19)
    at LocalAccountsProvider.request (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/providers/accounts.ts:187:34)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at ChainIdValidatorProvider._getChainIdFromEthNetVersion (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/providers/chainId.ts:33:17)
    at ChainIdValidatorProvider._getChainId (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/providers/chainId.ts:17:25)
    at ChainIdValidatorProvider.request (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/providers/chainId.ts:55:29)
    at EthersProviderWrapper.send (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/@nomiclabs/hardhat-ethers/src/internal/ethers-provider-wrapper.ts:13:20)
    at getSigners (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/@nomiclabs/hardhat-ethers/src/internal/helpers.ts:45:20)
    at getContractFactoryByAbiAndBytecode (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/node_modules/@nomiclabs/hardhat-ethers/src/internal/helpers.ts:288:21)
    at main (/home/mayank/hh-fcc/hardhat-simple-storage-fcc/scripts/deploy.js:6:32)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

This is the error that I am seeing when I am running the command

yarn hardhat run scripts/deploy.js --network mainnet

I am using mainnet on alchemy instead of rinkeby as its deprecated. I am assuming that the rpc link is not working as I am following the exact steps given in the video.

require("@nomiclabs/hardhat-waffle")
require("hardhat-gas-reporter")
require("./tasks/block-number")
require("@nomiclabs/hardhat-etherscan")
require("dotenv").config()
require("solidity-coverage")
// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more
/**
 * @type import('hardhat/config').HardhatUserConfig
 */

const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY || ""
const MAINNET_RPC_URL =
  process.env.MAINNET_RPC_URL ||
  "https://eth-rinkeby.alchemyapi.io/v2/your-api-key" 
const PRIVATE_KEY =
  process.env.PRIVATE_KEY ||
  "0x11ee3108a03081fe260ecdc106554d09d9d1209bcafd46942b10e02943effc4a"
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || ""

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {},
    mainnet: {
      url: MAINNET_RPC_URL,
      accounts: [PRIVATE_KEY],
      chainId: 4,
    },
    localhost: {
      url: "http://localhost:8545",
      chainId: 31337,
    },
  },
  solidity: "0.8.8",
  etherscan: {
    apiKey: ETHERSCAN_API_KEY,
  },
  gasReporter: {
    enabled: true,
    currency: "USD",
    outputFile: "gas-report.txt",
    noColors: true,
    coinmarketcap: COINMARKETCAP_API_KEY,
  },
}

[othaime-en]

@mayankmalhan123 Please share your deploy.js file

Sidenote: I don't see any need to deploy to the mainnet because you'll use real money. Why not use another testnet. I recommend goerli.

[mayankmalhan123]

// imports
const { ethers, run, network } = require("hardhat")

// async main
async function main() {
  const SimpleStorageFactory = await ethers.getContractFactory("SimpleStorage")
  console.log("Deploying contract...")
  const simpleStorage = await SimpleStorageFactory.deploy()
  await simpleStorage.deployed()
  console.log(`Deployed contract to: ${simpleStorage.address}`)
  // what happens when we deploy to our hardhat network?
  if (network.config.chainId === 4 && process.env.ETHERSCAN_API_KEY) {
    console.log("Waiting for block confirmations...")
    await simpleStorage.deployTransaction.wait(6)
    await verify(simpleStorage.address, [])
  }

  const currentValue = await simpleStorage.retrieve()
  console.log(`Current Value is: ${currentValue}`)

  // Update the current value
  const transactionResponse = await simpleStorage.store(7)
  await transactionResponse.wait(1)
  const updatedValue = await simpleStorage.retrieve()
  console.log(`Updated Value is: ${updatedValue}`)
}

// async function verify(contractAddress, args) {
const verify = async (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)
    }
  }
}

// main
main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error)
    process.exit(1)
  })

[mayankmalhan123]

I was initially trying with goerli but was getting the same error.

[othaime-en]

Hey @mayankmalhan123. There is an issue in your hardhat.config.js Mainnet chainId is 1 not 4 Make that correction.

[mayankmalhan123]

Hi @othaime-en , I have resolved the issue, switched back to goerli and used chain id 5 at both places. It worked like a charm.

Thank you.

[mayankmalhan123]

Make sure to use the correct chain ID in deploy.js as well as hardhat.config.js.

The chainId for goerli is 5