Lesson 7: An unexpected error occurred

[4O4MAGlC1AN]

$ /home/thomastang/chainlink/hardhat-fund-me/node_modules/.bin/hardhat deploy --network sepolia
Nothing to compile
An unexpected error occurred:

Error: ERROR processing /home/thomastang/chainlink/hardhat-fund-me/deploy/01-deploy-fund-me.js:
Error: invalid address (argument="address", value=undefined, code=INVALID_ARGUMENT, version=address/5.7.0) (argument="priceFeedAddress", value=undefined, code=INVALID_ARGUMENT, version=abi/5.7.0)
    at Logger.makeError (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/logger/src.ts/index.ts:269:28)
    at Logger.throwError (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/logger/src.ts/index.ts:281:20)
    at Logger.throwArgumentError (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/logger/src.ts/index.ts:285:21)
    at AddressCoder.Coder._throwError (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/coders/abstract-coder.ts:68:16)
    at AddressCoder.encode (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/coders/address.ts:22:18)
    at /home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/coders/array.ts:71:19
    at Array.forEach (<anonymous>)
    at pack (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/coders/array.ts:54:12)
    at TupleCoder.encode (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/coders/tuple.ts:54:20)
    at AbiCoder.encode (/home/thomastang/chainlink/hardhat-fund-me/node_modules/@ethersproject/abi/src.ts/abi-coder.ts:111:15)
    at DeploymentsManager.executeDeployScripts (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1222:19)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at DeploymentsManager.runDeploy (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1052:5)
    at SimpleTaskDefinition.action (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat-deploy/src/index.ts:422:5)
    at Environment._runTaskDefinition (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat/src/internal/core/runtime-environment.ts:219:14)
    at Environment.run (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat/src/internal/core/runtime-environment.ts:131:14)
    at SimpleTaskDefinition.action (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat-deploy/src/index.ts:568:32)
    at Environment._runTaskDefinition (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat/src/internal/core/runtime-environment.ts:219:14)
    at Environment.run (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat/src/internal/core/runtime-environment.ts:131:14)
    at SimpleTaskDefinition.action (/home/thomastang/chainlink/hardhat-fund-me/node_modules/hardhat-deploy/src/index.ts:653:5)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

hardhat.config.js

require("dotenv").config();
require("@nomiclabs/hardhat-etherscan");
require("@nomiclabs/hardhat-waffle");
require("hardhat-gas-reporter");
require("solidity-coverage");
require("hardhat-deploy");

const SEPOLIA_RPC_URL = process.env.SEPOLIA_RPC_URL;
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY;
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;

module.exports = {
  // solidity: "0.8.8",
  solidity: {
    compilers: [{ version: "0.8.8" }, { version: "0.6.6" }],
  },
  networks: {
    sepolia: {
      url: SEPOLIA_RPC_URL,
      accounts: [PRIVATE_KEY],
      chainId: 11155111,
      blockConfirmations: 6,
    },
  },
  gasReporter: {
    enabled: false,
    outputFile: "gas-report.txt",
    noColors: true,
    currency: "USD",
    coinmarketcap: COINMARKETCAP_API_KEY,
  },
  etherscan: {
    apiKey: ETHERSCAN_API_KEY,
  },
  namedAccounts: {
    deployer: {
      default: 0,
    },
    user: {
      default: 1,
    },
  },
};

01-deploy-fund-me.js

// import
// main funtion
// calling of main function

// function depoyFunc(hre) {
//   console.log("Hi!");
// }

// module.exports.default = depoyFunc;

// module.exports = async (hre) => {
//   const { getNamedAccounts, deployments } = hre;

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

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

  // const ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];
  let ethUsdPriceFeedAddress;
  if (developmentChains.includes(network.name)) {
    const ethUsdAggregator = await deployments.get("MockV3Aggregator");
    ethUsdPriceFeedAddress = ethUsdAggregator.address;
  } else {
    ethUsdPriceFeedAddress = networkConfig[chainId]["ethUsdPriceFeed"];
  }

  // when going for localhost or hardhat network we wang to use a mock
  const args = [ethUsdPriceFeedAddress];
  const fundMe = await deploy("FundMe", {
    from: deployer,
    args: args, //put price feed address
    log: true,
    waitConfirmations: network.config.blockConfirmations || 1,
  });

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

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

[Nlferu]

Hi @4O4MAGlC1AN

You are just passing undefined ethUsdPriceFeedAddress.

Try adding this line in your deploy script:

require("dotenv").config()

If that doesnt work, just make sure you are using ethers v5 instead of ethers v6 as syntax is much different

[FreezingM]

@4O4MAGlC1AN
Perhaps you could try setting more breakpoints and then step by step querying the parameters to see if they are communicated correctly