Lesson 6: deploy.js not using default hardhat network

[Priyanshu-Desai]

I am currently at lesson 6, timestamp 8:50
I currently have a deploy.js file that looks like this:

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

async function main() {
  const simpleStorageFactory = await ethers.getContractFactory("SimpleStorage");
  console.log("Deploying contract...");
  const simpleStorage = await simpleStorageFactory.deploy();
  await simpleStorage.waitForDeployment();
  simpleStorageAddress = simpleStorage.target;
  console.log(`Contract deployed to: ${simpleStorageAddress}`);
}

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

and my hardhet.config.js file looks like this:

require("@nomicfoundation/hardhat-toolbox");
require("dotenv").config();

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 31337,
    },
    sepolia: {
      url: process.env.SEPOLIA_RPC_URL,
      accounts: [process.env.SEPOLIA_PRIVATE_KEY],
      chainId: 11155111,
    },
  },
  solidity: "0.8.19",
};

For some reason, when I try to run deploy.js using the default hardhat network, it tries to use the sepolia network instead and throws this error:

    throw new errors_1.HardhatError(errors_list_1.ERRORS.GENERAL.INVALID_CONFIG, { errors: errorList });
    ^

HardhatError: HH8: There's one or more errors in your config file:

  * Invalid account: #0 for network: sepolia - Expected string, received undefined

To learn more about Hardhat's configuration, please go to https://hardhat.org/config/
    at validateConfig (D:\Priyanshu\blockchain\hardhat-simple-storage\node_modules\hardhat\internal\core\config\config-validation.js:256:11)
    at loadConfigAndTasks (D:\Priyanshu\blockchain\hardhat-simple-storage\node_modules\hardhat\internal\core\config\config-loading.js:79:44)
    at Object.<anonymous> (D:\Priyanshu\blockchain\hardhat-simple-storage\node_modules\hardhat\internal\lib\hardhat-lib.js:30:84)
    at Module._compile (node:internal/modules/cjs/loader:1112:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1166:10)
    at Module.load (node:internal/modules/cjs/loader:988:32)
    at Module._load (node:internal/modules/cjs/loader:834:12)
    at Module.require (node:internal/modules/cjs/loader:1012:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (D:\Priyanshu\blockchain\hardhat-simple-storage\scripts\deploy.js:1:20) {
  parent: undefined,
  _stack: "HardhatError: HH8: There's one or more errors in your config file:\n" +
    '\n' +
    '  * Invalid account: #0 for network: sepolia - Expected string, received undefined\n' +
    '\n' +
    "To learn more about Hardhat's configuration, please go to https://hardhat.org/config/\n" +
    '    at validateConfig (D:\\Priyanshu\\blockchain\\hardhat-simple-storage\\node_modules\\hardhat\\internal\\core\\config\\config-validation.js:256:11)\n' +
    '    at loadConfigAndTasks (D:\\Priyanshu\\blockchain\\hardhat-simple-storage\\node_modules\\hardhat\\internal\\core\\config\\config-loading.js:79:44)\n' +
    '    at Object.<anonymous> (D:\\Priyanshu\\blockchain\\hardhat-simple-storage\\node_modules\\hardhat\\internal\\lib\\hardhat-lib.js:30:84)\n' +
    '    at Module._compile (node:internal/modules/cjs/loader:1112:14)\n' +
    '    at Module._extensions..js (node:internal/modules/cjs/loader:1166:10)\n' +
    '    at Module.load (node:internal/modules/cjs/loader:988:32)\n' +
    '    at Module._load (node:internal/modules/cjs/loader:834:12)\n' +
    '    at Module.require (node:internal/modules/cjs/loader:1012:19)\n' +
    '    at require (node:internal/modules/cjs/helpers:102:18)\n' +
    '    at Object.<anonymous> (D:\\Priyanshu\\blockchain\\hardhat-simple-storage\\scripts\\deploy.js:1:20)',
  errorDescriptor: {
    number: 8,
    message: "There's one or more errors in your config file:\n" +
      '\n' +
      '%errors%\n' +
      '\n' +
      "To learn more about Hardhat's configuration, please go to https://hardhat.org/config/",
    title: 'Invalid Hardhat config',
    description: 'You have one or more errors in your config file.\n' +
      '\n' +
      'Check the error message for details, or go to the [documentation](https://hardhat.org/config/) to learn more.',
    shouldBeReported: false
  },
  number: 8,
  messageArguments: {
    errors: '  * Invalid account: #0 for network: sepolia - Expected string, received undefined'
  },
  _isHardhatError: true
}

Please can someone help me fix this error so that deploy.js runs using the hardhat network.

[promenox]

The error Invalid account: #0 for network: sepolia - Expected string, received undefined suggest that your private key variable is undefined.

1. Check your environment variables' names are spelled correctly.
2. Check your variables' data is formatted correctly.
3. Check your .env file is in the correct location.

Add console.log(process.env.SEPOLIA_RPC_URL) and console.log(process.env.SEPOLIA_PRIVATE_KEY) to your deploy script - to check your data is formatted as expected.

[Priyanshu-Desai]

thanks