Can someone explain this error please?

[Adnanebds]

Error: ERROR processing /home/kenkitano/hardhat-tutorial/deploy/01-deploy-raffle.js: TypeError: Cannot read properties of undefined (reading 'toHexString')

• CODE:

const { network, ethers } = require("hardhat") const { developmentChains, networkConfig } = require("../helper-hardhat-config") const { verify } = require("../helper-hardhat-config") const VRF_SUB_FUND_AMOUNT = ethers.utils.parseEther("1")

module.exports = async function ({ getNamedAccounts, deployments }) { const { deploy, log } = deployments const { deployer } = await getNamedAccounts() const chainId = network.config.chainId let vrfCoordinatorV2Address, subscriptionId if (developmentChains.includes(network.name)) { vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock") vrfCoordinatorV2Address = vrfCoordinatorV2Mock.address const transactionResponse = await vrfCoordinatorV2Mock.createSubscription() const transactionReceipt = await transactionResponse.wait() subscriptionId = transactionReceipt.events[0].args.subId await vrfCoordinatorV2Mock.fundSubscription(subscriptionId, VRF_SUB_FUND_AMOUNT) } else { vrfCoordinatorV2Address = networkConfig[chainId]["VRFCoordinatorV2Mock"] subscriptionId = networkConfig[chainId]["subscriptionId"] } const interval = networkConfig[chainId]["interval"] const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"] const gasLane = networkConfig[chainId]["gasLane"] const entranceFee = networkConfig[chainId]["entranceFee"] const args = [ vrfCoordinatorV2Address, entranceFee, interval, gasLane, callbackGasLimit, subscriptionId, ] const raffle = await deploy("Raffle", { from: deployer, args: args, log: true, waitConfirmations: network.config.blockConfirmations || 1, })

if (!developmentChains.includes(network.name && process.env.ETHERSCAN_API_KEY)) {
    log("Verifying...")
    await verify(raffle.address, args)
}
log("---------------------------------")

}

module.exports.tags = ["all", "raffle"]

[ade-hardhat]

Hi, make sure that your arguments for the deploy script is lined up in the same order as the parameters in your contract's constructor.

const args = [
vrfCoordinatorV2Address,
entranceFee,
interval,
gasLane,
callbackGasLimit,
subscriptionId,
]

  constructor(
        address vrfCoordinatorV2, //contract, we're going to need to deploy mocks for this
        uint256 entranceFee,
        bytes32 gasLane,
        uint64 subscriptionId,
        uint256 callbackGasLimit,
        uint256 interval
    )

For example, the above isn't lined up in the same order. Correct order would be :

const args = [
vrfCoordinatorV2Address,
entranceFee,
gasLane,
subscriptionId,
callbackGasLimit,
interval
]

I hope this helps.

[Adnanebds]

Now i get the error: unexpected error occurred:

Error: ERROR processing /home/kenkitano/hardhat-tutorial/deploy/01-deploy-raffle.js: Error: invalid BigNumber value (argument="value", value=undefined, code=INVALID_ARGUMENT, version=bignumber/5.7.0)

CODE (js):

const { network, ethers } = require("hardhat") const { developmentChains, networkConfig } = require("../helper-hardhat-config") const { verify } = require("../helper-hardhat-config") const VRF_SUB_FUND_AMOUNT = ethers.utils.parseEther("1")

module.exports = async function ({ getNamedAccounts, deployments }) { const { deploy, log } = deployments const { deployer } = await getNamedAccounts() const chainId = network.config.chainId let vrfCoordinatorV2Address, subscriptionId if (developmentChains.includes(network.name)) { vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock") vrfCoordinatorV2Address = vrfCoordinatorV2Mock.address const transactionResponse = await vrfCoordinatorV2Mock.createSubscription() const transactionReceipt = await transactionResponse.wait() subscriptionId = transactionReceipt.events[0].args.subId await vrfCoordinatorV2Mock.fundSubscription(subscriptionId, VRF_SUB_FUND_AMOUNT) } else { vrfCoordinatorV2Address = networkConfig[chainId]["VRFCoordinatorV2Mock"] subscriptionId = networkConfig[chainId]["subscriptionId"] } const interval = networkConfig[chainId]["interval"] const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"] const gasLane = networkConfig[chainId]["gasLane"] const entranceFee = networkConfig[chainId]["entranceFee"] const args = [ vrfCoordinatorV2Address, entranceFee, gasLane, subscriptionId, callbackGasLimit, interval, ] const raffle = await deploy("Raffle", { from: deployer, args: args, log: true, waitConfirmations: network.config.blockConfirmations || 1, })

if (!developmentChains.includes(network.name && process.env.ETHERSCAN_API_KEY)) {
    log("Verifying...")
    await verify(raffle.address, args)
}
log("---------------------------------")

}

module.exports.tags = ["all", "raffle"]

CONTRACT:

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.7;

import "@chainlink/contracts/src/v0.8/interfaces/VRFCoordinatorV2Interface.sol"; import "@chainlink/contracts/src/v0.8/VRFConsumerBaseV2.sol"; import "@chainlink/contracts/src/v0.8/interfaces/KeeperCompatibleInterface.sol"; import "hardhat/console.sol";

/ Errors / error RaffleUpkeepNotNeeded(uint256 currentBalance, uint256 numPlayers, uint256 raffleState); error RaffleTransferFailed(); error RaffleSendMoreToEnterRaffle(); error RaffleRaffleNotOpen();

/**@title A sample Raffle Contract

• @author Patrick Collins
• @notice This contract is for creating a sample raffle contract

• @dev This implements the Chainlink VRF Version 2 / contract Raffle is VRFConsumerBaseV2, KeeperCompatibleInterface { / Type declarations / enum RaffleState { OPEN, CALCULATING } / State variables */ // Chainlink VRF Variables VRFCoordinatorV2Interface private immutable i_vrfCoordinator; uint64 private immutable i_subscriptionId; bytes32 private immutable i_gasLane; uint32 private immutable i_callbackGasLimit; uint16 private constant REQUEST_CONFIRMATIONS = 3; uint32 private constant NUM_WORDS = 1;

  // Lottery Variables uint256 private immutable i_interval; uint256 private immutable i_entranceFee; uint256 private s_lastTimeStamp; address private s_recentWinner; address payable[] private s_players; RaffleState private s_raffleState;

  / Events / event RequestedRaffleWinner(uint256 indexed requestId); event RaffleEnter(address indexed player); event WinnerPicked(address indexed player);

  / Functions / constructor( address vrfCoordinatorV2, //contract, we're going to need to deploy mocks for this uint256 entranceFee, bytes32 gasLane, uint64 subscriptionId, uint32 callbackGasLimit, uint256 interval ) VRFConsumerBaseV2(vrfCoordinatorV2) { i_vrfCoordinator = VRFCoordinatorV2Interface(vrfCoordinatorV2); i_gasLane = gasLane; i_interval = interval; i_subscriptionId = subscriptionId; i_entranceFee = entranceFee; s_raffleState = RaffleState.OPEN; s_lastTimeStamp = block.timestamp; i_callbackGasLimit = callbackGasLimit; }

  function enterRaffle() public payable { // require(msg.value >= i_entranceFee, "Not enough value sent"); // require(s_raffleState == RaffleState.OPEN, "Raffle is not open"); if (msg.value < i_entranceFee) { revert Raffle__SendMoreToEnterRaffle(); } if (s_raffleState != RaffleState.OPEN) { revert Raffle__RaffleNotOpen(); } s_players.push(payable(msg.sender)); // Emit an event when we update a dynamic array or mapping // Named events with the function name reversed emit RaffleEnter(msg.sender); }

  /**

  • @dev This is the function that the Chainlink Keeper nodes call
  • they look for upkeepNeeded to return True.
  • the following should be true for this to return true:
  • 1. The time interval has passed between raffle runs.
  • 2. The lottery is open.
  • 3. The contract has ETH.
  • 4. Implicity, your subscription is funded with LINK. / function checkUpkeep( bytes memory / checkData / ) public view override returns ( bool upkeepNeeded, bytes memory / performData */ ) { bool isOpen = RaffleState.OPEN == s_raffleState; bool timePassed = ((block.timestamp - s_lastTimeStamp) > i_interval); bool hasPlayers = s_players.length > 0; bool hasBalance = address(this).balance > 0; upkeepNeeded = (timePassed && isOpen && hasBalance && hasPlayers); return (upkeepNeeded, "0x0"); // can we comment this out? }

  /**

  • @dev Once checkUpkeep is returning true, this function is called
  • and it kicks off a Chainlink VRF call to get a random winner. / function performUpkeep( bytes calldata / performData */ ) external override { (bool upkeepNeeded, ) = checkUpkeep(""); // require(upkeepNeeded, "Upkeep not needed"); if (!upkeepNeeded) { revert Raffle__UpkeepNotNeeded( address(this).balance, s_players.length, uint256(s_raffleState) ); } s_raffleState = RaffleState.CALCULATING; uint256 requestId = i_vrfCoordinator.requestRandomWords( i_gasLane, i_subscriptionId, REQUEST_CONFIRMATIONS, i_callbackGasLimit, NUM_WORDS ); // Quiz... is this redundant? emit RequestedRaffleWinner(requestId); }

  /**

  • @dev This is the function that Chainlink VRF node
  • calls to send the money to the random winner. / function fulfillRandomWords( uint256, / requestId / uint256[] memory randomWords ) internal override { // s_players size 10 // randomNumber 202 // 202 % 10 ? what's doesn't divide evenly into 202? // 20 10 = 200 // 2 // 202 % 10 = 2 uint256 indexOfWinner = randomWords[0] % s_players.length; address payable recentWinner = s_players[indexOfWinner]; s_recentWinner = recentWinner; s_players = new address payable; s_raffleState = RaffleState.OPEN; s_lastTimeStamp = block.timestamp; (bool success, ) = recentWinner.call{value: address(this).balance}(""); // require(success, "Transfer failed"); if (!success) { revert Raffle__TransferFailed(); } emit WinnerPicked(recentWinner); }

  /* Getter Functions /

  function getRaffleState() public view returns (RaffleState) { return s_raffleState; }

  function getNumWords() public pure returns (uint256) { return NUM_WORDS; }

  function getRequestConfirmations() public pure returns (uint256) { return REQUEST_CONFIRMATIONS; }

  function getRecentWinner() public view returns (address) { return s_recentWinner; }

  function getPlayer(uint256 index) public view returns (address) { return s_players[index]; }

  function getLastTimeStamp() public view returns (uint256) { return s_lastTimeStamp; }

  function getInterval() public view returns (uint256) { return i_interval; }

  function getEntranceFee() public view returns (uint256) { return i_entranceFee; }

  function getNumberOfPlayers() public view returns (uint256) { return s_players.length; } }

[PatrickAlphaC]

Can you:

1. Make this a discusson on the full repo? https://github.com/smartcontractkit/full-blockchain-solidity-course-js/
2. Follow this section for formatting questions? https://www.youtube.com/watch?t=19846&v=gyMwXuJrbJQ&feature=youtu.be