Lesson 9 Lottery: unable to deploy contracts, via deployment script. ERROR: TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')

[Glow-in-the-dark]

I ran > yarn hardhat deploy., and i recieved an error message:

This is my 01-deploy-raffle.js

const { network } = require("hardhat");
const { developmentChains } = require("../helper-hardhat-config");

// you need these two variables cuz, when we deploy the V2Mock contract, we need to input these 2 arguments, which will go into the contract's constructor.
const BASE_FEE = ethers.utils.parseEther("0.25"); // cost 0.25 link per request. Seen from: https://docs.chain.link/vrf/v2/subscription/supported-networks
const GAS_PRICE_LINK = 1e9; //calculated value based on the gas price of the chain. (link per Gas) so the keepers get compensated for GAS paid to run the contract on certain time.

module.exports = async function ({ getNamedAccounts, deployments }) {
  const { deploy, log } = deployments;
  const { deployer } = await getNamedAccounts;
  const args = [BASE_FEE, GAS_PRICE_LINK];

  if (developmentChains.includes(network.name)) {
    log("Local network detected! Deploying mocks");
    // deploy a mock vrfcoordinator..
    await deploy("VRFCoordinatorV2Mock", {
      from: deployer,
      log: true,
      args: args, // we can see from the github that the VRFCoordinatorV2Mock.sol contract's constructor take in 2 arguments.
    });
    log("Mocks Deployed!");
    log("------------------------------------------");
  }
};

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

My hardhat.config.js:

require("@nomiclabs/hardhat-waffle");
require("@nomiclabs/hardhat-etherscan");
require("@nomiclabs/hardhat-ethers");
require("hardhat-deploy");
require("solidity-coverage");
require("hardhat-gas-reporter");
require("hardhat-contract-sizer");
require("dotenv").config();
/** @type import('hardhat/config').HardhatUserConfig */

const SEPOLIA_RPC_URL = process.env.SEPOLIA_RPC_URL;
const PRIVATE_KEY = process.env.PRIVATE_KEY;
const USER1_PK = process.env.USER1_PK;
const CMC_API_KEY = process.env.CMC_API_KEY;
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY;

module.exports = {
  defaultNetwork: "hardhat",
  networks: {
    hardhat: {
      chainId: 31337,
      blockConfirmations: 1,
    },
    sepolia: {
      chainId: 11155111,
      blockConfirmations: 6,
      url: SEPOLIA_RPC_URL,
      accounts: [PRIVATE_KEY, USER1_PK],
    },
  },
  solidity: "0.8.18",
  namedAccounts: {
    deployer: {
      default: 0,
    },
    player: {
      default: 1,
    },
  },
};

My helper-config.js:

const { network } = require("hardhat");
const { developmentChains } = require("../helper-hardhat-config");

// you need these two variables cuz, when we deploy the V2Mock contract, we need to input these 2 arguments, which will go into the contract's constructor.
const BASE_FEE = ethers.utils.parseEther("0.25"); // cost 0.25 link per request. Seen from: https://docs.chain.link/vrf/v2/subscription/supported-networks
const GAS_PRICE_LINK = 1e9; //calculated value based on the gas price of the chain. (link per Gas) so the keepers get compensated for GAS paid to run the contract on certain time.

module.exports = async function ({ getNamedAccounts, deployments }) {
  const { deploy, log } = deployments;
  const { deployer } = await getNamedAccounts;
  const args = [BASE_FEE, GAS_PRICE_LINK];

  if (developmentChains.includes(network.name)) {
    log("Local network detected! Deploying mocks");
    // deploy a mock vrfcoordinator..
    await deploy("VRFCoordinatorV2Mock", {
      from: deployer,
      log: true,
      args: args, // we can see from the github that the VRFCoordinatorV2Mock.sol contract's constructor take in 2 arguments.
    });
    log("Mocks Deployed!");
    log("------------------------------------------");
  }
};

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

I tried to remove my node_modules, and reinstalling it, but still have the same issue.
For more reference, you can refer to https://github.com/Glow-in-the-dark/Solidity-playground/tree/main/EtherJS_Hardhat/hardhat-smartcontract-lottery, if recreating it helps to pin down the error.

Thanks to whoever who can help out !

[Nishant-ops]

@Glow-in-the-dark new version of ethers have this issue, use ethers version:5.4.1, it will work

[Glow-in-the-dark]

Ok, I did these steps:
Install the ethers version 5; yarn add -D ethers@^5 --force
Then yarn add --save-dev @nomiclabs/hardhat-ethers@npm:hardhat-deploy-ethers --force

am able to detect localnetwork, but error happens when deploying Mocks, on the deploy-mocks.js script.

The new error is:

[HarshDev56]

@Glow-in-the-dark in your both deploy scripts you need to require ethers from hardhat add this below line in your both deploy scripts at top

const { ethers } = require("hardhat") 

and also you need to downgrade your ethers version so write below command in your terminal
yarn add ethers@5.4.0

[Glow-in-the-dark]

Hey HarshDev ! thanks for the prompt reply.
Not sure if that's the issue, because for my 01-deploy-raffle.js:
i had:

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

which i directly deconstruct hardhat, and get the network part that i used. Similarly, i did the same for my 00-deploy-mock.js
which i used the const { network } = require("hardhat"), and call it directly using network.name:

  if (developmentChains.includes(network.name)) {
    log("Local network detected! Deploying mocks");
    // deploy a mock vrfcoordinator..
    await deploy("VRFCoordinatorV2Mock", {
      from: deployer,
      log: true,
      args: args, // we can see from the github that the VRFCoordinatorV2Mock.sol contract's constructor take in 2 arguments.
    });
    log("Mocks Deployed!");
    log("------------------------------------------");
  }

However, i went ahead and added:
const { ethers } = require("hardhat") but it didn't seem to help.

However, i downgraded to ethers@5, and it works, however, another error came out.:

[HarshDev56]

@Glow-in-the-dark in your 01-deploy-raffle.js file you need to replace this line

 const { deployer } = await getNamedAccounts;

with this one

 const { deployer } = await getNamedAccounts();

[Glow-in-the-dark]

Ahh thanks @HarshDev56 !!! Seems like The Mock got deployed !!! but not sure why there is still this error.

Thanks alot btw !!

And if u found the solution, could u tell me how u found it ? as in the debugging process ? because i couldn't find any leads from the Error code.

[HarshDev56]

@Glow-in-the-dark in your helper-hardhat-config.js file you write subscriptionId: "0" so try to give real subscription id instead of 0 .

[Glow-in-the-dark]

Hey, thanks for the reply Chad !
mmmm... It seems like Patrick put "0" as a placeholder, and it works for him tho.
Nevertheless i went to create a subscription, and added the subscription ID, but it still didn't work.

I checked my Raffle.sol 's Constructor too:

constructor (
        address vrfCoordinatorV2, 
        uint256 entranceFee, 
        bytes32 gasLane, 
        uint64 subscriptionId, 
        uint32 callbackGasLimit,
        uint256 interval
    ) VRFConsumerBaseV2(vrfCoordinatorV2) {
        i_entranceFee = entranceFee;
        i_vrfCoordinator = VRFCoordinatorV2Interface(vrfCoordinatorV2);
        i_gasLane = gasLane;
        i_subscriptionId = subscriptionId;
        i_callbackGasLimit = callbackGasLimit;
        s_raffleState = RaffleState.OPEN; // or u can also do  s_raffleState = RaffleState(0);
        s_lastTimeStamp = block.timestamp;
        i_interval = interval;
    }

which the callbackGasLimit i did set it at uint32, so it can handle the 500000 limit i set in my helper-hardhat-config.js file:

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

const networkConfig = {
  11155111: {
    name: "sepolia",
    vrfCoordinatorV2: "0x8103B0A8A00be2DDC778e6e7eaa21791Cd364625",
    entranceFee: ethers.utils.parseEther("0.01"),
    gasLane:
      "0x474e34a077df58807dbe9c96d3c009b23b3c6d0cce433e59bbf5b34f823bc56c",
    subscriptionId: "2772", // put as "0" as placeholder first, add in later after subscription.
    callbackGasLimit: "500000",
    interval: "30", //30 seconds
  }, 
  31337: {
    name: "hardhat",
    entranceFee: ethers.utils.parseEther("0.01"),
    gasLane:
      "0x474e34a077df58807dbe9c96d3c009b23b3c6d0cce433e59bbf5b34f823bc56c",
  },
  callbackGasLimit: "500000",
  interval: "30",
};

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

module.exports = {
  networkConfig,
  developmentChains,
};

Not sure where else went wrong, the similar Error is still there.

[Glow-in-the-dark]

i tried to debug, and not sure if this is the problem.

[Glow-in-the-dark]

Ah nvm ! found the Error, at my helper-hardhat-config.js files.
Thanks @HarshDev56 !! fully working now