LESSON 13: "Error: invalid address or ENS name" when running the aaveBorrow.js script

[terrytjw]

I am encountering this error when running yarn hardhat run scripts/aaveBorrow.js:

Here's my code for some context:

IWeth.sol:

// SPDX-License-Identifier: MIT
pragma solidity 0.4.19;

interface IWeth {
  function allowance(address owner, address spender) external view returns (uint256 remaining);

  function approve(address spender, uint256 value) external returns (bool success);

  function balanceOf(address owner) external view returns (uint256 balance);

  function decimals() external view returns (uint8 decimalPlaces);

  function name() external view returns (string memory tokenName);

  function symbol() external view returns (string memory tokenSymbol);

  function totalSupply() external view returns (uint256 totalTokensIssued);

  function transfer(address to, uint256 value) external returns (bool success);

  function transferFrom(
    address from,
    address to,
    uint256 value
  ) external returns (bool success);

  function deposit() external payable;

  function withdraw(uint256 wad) external;
}

hardhat.config.js:

require("@nomiclabs/hardhat-waffle");
require("@nomiclabs/hardhat-etherscan");
require("hardhat-deploy");
require("solidity-coverage");
require("hardhat-gas-reporter");
require("hardhat-contract-sizer");
require("./tasks");
require("@appliedblockchain/chainlink-plugins-fund-link");
require("dotenv").config();

/**
 * @type import('hardhat/config').HardhatUserConfig
 */

const MAINNET_RPC_URL =
    process.env.MAINNET_RPC_URL ||
    process.env.ALCHEMY_MAINNET_RPC_URL ||
    "https://eth-mainnet.alchemyapi.io/v2/your-api-key";
const RINKEBY_RPC_URL =
    process.env.RINKEBY_RPC_URL || "https://eth-rinkeby.alchemyapi.io/v2/your-api-key";
const KOVAN_RPC_URL =
    process.env.KOVAN_RPC_URL || "https://eth-kovan.alchemyapi.io/v2/your-api-key";
const POLYGON_MAINNET_RPC_URL =
    process.env.POLYGON_MAINNET_RPC_URL || "https://polygon-mainnet.alchemyapi.io/v2/your-api-key";
const GOERlI_RPC_URL =
    process.env.GOERlI_RPC_URL || "https://eth-goerli.alchemyapi.io/v2/your-api-key";
const PRIVATE_KEY = process.env.PRIVATE_KEY;
// optional
const MNEMONIC = process.env.MNEMONIC || "Your mnemonic";
const FORKING_BLOCK_NUMBER = process.env.FORKING_BLOCK_NUMBER;

// Your API key for Etherscan, obtain one at https://etherscan.io/
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || "Your etherscan API key";
const POLYGONSCAN_API_KEY = process.env.POLYGONSCAN_API_KEY || "Your polygonscan API key";
const REPORT_GAS = process.env.REPORT_GAS || false;

module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        hardhat: {
            // If you want to do some forking set `enabled` to true
            forking: {
                url: MAINNET_RPC_URL,
                blockNumber: FORKING_BLOCK_NUMBER,
                enabled: true,
            },
            chainId: 31337,
        },
        localhost: {
            chainId: 31337,
        },
        kovan: {
            url: KOVAN_RPC_URL,
            accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
            //accounts: {
            //     mnemonic: MNEMONIC,
            // },
            saveDeployments: true,
            chainId: 42,
        },
        rinkeby: {
            url: RINKEBY_RPC_URL,
            accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
            //   accounts: {
            //     mnemonic: MNEMONIC,
            //   },
            saveDeployments: true,
            chainId: 4,
        },
        goerli: {
            url: GOERlI_RPC_URL,
            accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
            //   accounts: {
            //     mnemonic: MNEMONIC,
            //   },
            saveDeployments: true,
            chainId: 5,
        },
        mainnet: {
            url: MAINNET_RPC_URL,
            accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
            //   accounts: {
            //     mnemonic: MNEMONIC,
            //   },
            saveDeployments: true,
            chainId: 1,
        },
        polygon: {
            url: POLYGON_MAINNET_RPC_URL,
            accounts: PRIVATE_KEY !== undefined ? [PRIVATE_KEY] : [],
            saveDeployments: true,
            chainId: 137,
        },
    },
    etherscan: {
        // yarn hardhat verify --network <NETWORK> <CONTRACT_ADDRESS> <CONSTRUCTOR_PARAMETERS>
        apiKey: {
            rinkeby: ETHERSCAN_API_KEY,
            kovan: ETHERSCAN_API_KEY,
            polygon: POLYGONSCAN_API_KEY,
            goerli: ETHERSCAN_API_KEY,
        },
    },
    gasReporter: {
        enabled: REPORT_GAS,
        currency: "USD",
        outputFile: "gas-report.txt",
        noColors: true,
        // coinmarketcap: process.env.COINMARKETCAP_API_KEY,
    },
    contractSizer: {
        runOnCompile: false,
        only: ["APIConsumer", "KeepersCounter", "PriceConsumerV3", "RandomNumberConsumerV2"],
    },
    namedAccounts: {
        deployer: {
            default: 0, // here this will by default take the first account as deployer
            1: 0, // similarly on mainnet it will take the first account as deployer. Note though that depending on how hardhat network are configured, the account 0 on one network can be different than on another
        },
        feeCollector: {
            default: 1,
        },
    },
    solidity: {
        compilers: [
            {
                version: "0.8.7",
            },
            {
                version: "0.6.6",
            },
            {
                version: "0.4.24",
            },
            {
                version: "0.4.19",
            },
        ],
    },
    mocha: {
        timeout: 200000, // 200 seconds max for running tests
    },
};

getWeth.js:

const { getNamedAccounts, ethers } = require("hardhat");

const DEPOSIT_AMOUNT = ethers.utils.parseEther("0.1");

const getWeth = async () => {
    const { deployer } = await getNamedAccounts;

    // need to call the "deposit" function on the WETH token contract
    // need 1. contract address 2. abi
    // WETH mainnet contract address: 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2
    const iWeth = await ethers.getContractAt(
        "IWeth",
        "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
        deployer
    );

    const tx = await iWeth.deposit({ value: DEPOSIT_AMOUNT });
    await tx.wait(1);
    const wethBal = await iWeth.balanceOf(deployer);
    console.log("Balance: ", wethBal.toString(), " ETH");
};

module.exports = { getWeth, DEPOSIT_AMOUNT };

aaveBorrow.js:

const { getWeth } = require("./getWeth");

const main = async () => {
    await getWeth();
};

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

Does someone know what's up with this?

[othaime-en]

Hello @t3reetan please add () in this line in your getWeth.js script const { deployer } = await getNamedAccounts;
The line should be const { deployer } = await getNamedAccounts();

[terrytjw]

Yes, thanks for spotting my mistake!

[othaime-en]

You're welcome :)

[krakxn]

Try the above fix; if it still persists, please push to GitHub.