Getting error while running my test in lesson 9

[haaarshit]

Getting error in Lesson 9 Error: ERROR processing /root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js: TypeError: Cannot read properties of undefined (reading '0')

Error occurring at line 23
Code at line 23 > subscriptionId = transactionReceipt.events[0].args.subId

My 01-deploy-raffle.js file

const { network, ethers } = require("hardhat")
const { networkConfig, developmenChain } = require("../helper-hardhat-conifg")
const {verify} = require("../utils/verify")

const VRF_SUB_FUND_AMOUNT = ethers.parseEther("30")

module.exports = async function ({ getNamedAccounts, deployments }) {
    const { deployer } = await getNamedAccounts()
    const { deploy, log } = deployments
    const chainId = network.config.chainId
    let vrfCoordinatorV2Address, subscriptionId

    if (developmenChain.includes(network.name)) {
        log("local network detected: deploying mocks....")

        const VRF2CordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
        vrfCoordinatorV2Address = VRF2CordinatorV2Mock.runner.address

        // console.log(VRF2CordinatorV2Mock)
        const transactionResponse = await VRF2CordinatorV2Mock.createSubscription()
        const transactionReceipt = await transactionResponse.wait(1)
        subscriptionId = transactionReceipt.events[0].args.subId
        // Fund subscription
        // Usually you had need the link token on a real network
        // on local network -> fund the subscrition without link token
        await VRF2CordinatorV2Mock.fundSubscription(subscriptionId, VRF_SUB_FUND_AMOUNT)
    } else {
        vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinator"]
        subscriptionId = networkConfig[chainId]["subscriptionid"]
    }

    const entranceFee = networkConfig[chainId]["entranceFee"]
    const gasLane = networkConfig[chainId]["gasLane"]
    const gasLimit = networkConfig[chainId]["callbackGasLimit"]
    const intervel = networkConfig[chainId]["intervel"]


    const args = [vrfCoordinatorV2Address, entranceFee, gasLane, subscriptionId, gasLimit, intervel]
    const raffle = await deploy("Raffle", {
        from: deployer,
        args: args,
        log: true,
        waitConfirmations: network.config.blockConfirmations || 1,
    })

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

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

I hardcoded the value of subscriptionId = 1 but then I were getting this error

     Error: Transaction reverted: function call to a non-contract account
    at Raffle.performUpkeep (contracts/Raffle.sol:128)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at HardhatNode._mineBlockWithPendingTxs (node_modules/hardhat/src/internal/hardhat-network/provider/node.ts:1840:23)
    at HardhatNode.mineBlock (node_modules/hardhat/src/internal/hardhat-network/provider/node.ts:517:16)
    at EthModule._sendTransactionAndReturnHash (node_modules/hardhat/src/internal/hardhat-network/provider/modules/eth.ts:1532:18)
    at HardhatNetworkProvider.request (node_modules/hardhat/src/internal/hardhat-network/provider/provider.ts:123:18)
    at HardhatEthersSigner.sendTransaction (node_modules/@nomicfoundation/hardhat-ethers/src/signers.ts:125:18)
    at send (node_modules/ethers/src.ts/contract/contract.ts:299:20)
  

[Nlferu]

Hi @coderharsx1122

I'm not sure why are you getting vrf address like this vrfCoordinatorV2Address = VRF2CordinatorV2Mock.runner.address just change it into vrfCoordinatorV2Address = VRF2CordinatorV2Mock.address as runner should be undefined. If your issue persist please link your repo it will be much easier to get whats wrong

[haaarshit]

@Neftyr No buddy it didn't work

[Nlferu]

This error is just simply telling you that you want to call function from non existent contract. I'm not sure what command do you run and what exact code, please tell me that and link your repo it will be much easier for me to help you

[haaarshit]

@Neftyr
This is my github repo -> github

[Nlferu]

@coderharsx1122

Ok I have figuered out what was the problem. First of all I highly recommend using ethers v5 instead of v6 as you do because of lack of understanding those are causing issues like yours...

In your 01-deploy-raffle.js as I said you are getting contract address wrong way, which causing you this issue (ethers v6 error) you need to get it like below:

vrfCoordinatorV2Address = await VRFCoordinatorV2Mock.getAddress()

instead of using some kind of runner or whatever.

If you fix it you will get another error, which stands InvalidConsumer() to fix that add below to your script in same 01-deploy-raffle.js file:

    if (developmenChain.includes(network.name)) {
        log(`Adding Consumer...`)
        const vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
        await vrfCoordinatorV2Mock.addConsumer(subscriptionId, raffle.address)
        log(`Consumer Successfully Added!`)
    }

Patrick is using ethers v5 whole course, that is why I would stick with it. Otherwise you will keep getting errors as changes are pretty big in v6.

[haaarshit]

@Neftyr
Thankyou so much for your guidance
I tried to change the version of ether to v5 but then i was getting this error -> error

[Nlferu]

@coderharsx1122

I'm glad I could help. You are getting this error because you are downgraded from ethers v6 into ethers v5 and you keep trying to use function getAddress(), which does not exists in ethers v5 (your should just use .address property to get contract address). You have to either start over or refactor your whole code into ethers v5 or keep using v6 for the rest of this lesson, which I do not recommend as you are at the beginning/middle.

[Nlferu]

To refactor code properly just take a look at course repository and start from changing every single .getAddress() into .address

[haaarshit]

Still getting the same error after using the ether v5

error

 ERROR processing /root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js:
TypeError: (0 , ethers_1.getAddress) is not a function
    at new HardhatEthersSigner (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomicfoundation/hardhat-ethers/src/signers.ts:73:30)
    at Function.create (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomicfoundation/hardhat-ethers/src/signers.ts:65:12)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at getSigner (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomicfoundation/hardhat-ethers/src/internal/helpers.ts:60:29)
    at async Promise.all (index 0)
    at getSigners (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomicfoundation/hardhat-ethers/src/internal/helpers.ts:45:30)
    at getContractAtFromArtifact (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomicfoundation/hardhat-ethers/src/internal/helpers.ts:402:21)
    at Object.module.exports [as func] (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js:81:32)
    at DeploymentsManager.executeDeployScripts (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1226:22)
    at DeploymentsManager.runDeploy (/root/hardhat-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1059:5)

code inside 01-deploy-raffle.js

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

const FUND_AMOUNT = ethers.utils.parseEther("1") // 1 Ether, or 1e18 (10^18) Wei

module.exports = async ({ getNamedAccounts, deployments }) => {
    const { deploy, log } = deployments
    const { deployer } = await getNamedAccounts()
    const chainId = network.config.chainId
    let vrfCoordinatorV2Address, subscriptionId, vrfCoordinatorV2Mock

    if (chainId == 31337) {
        // create VRFV2 Subscription
        vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
        vrfCoordinatorV2Address = vrfCoordinatorV2Mock.address
        const transactionResponse = await vrfCoordinatorV2Mock.createSubscription()
        const transactionReceipt = await transactionResponse.wait()
        subscriptionId = transactionReceipt.events[0].args.subId
        // Fund the subscription
        // Our mock makes it so we don't actually have to worry about sending fund
        await vrfCoordinatorV2Mock.fundSubscription(subscriptionId, FUND_AMOUNT)
    } else {
        vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"]
        subscriptionId = networkConfig[chainId]["subscriptionId"]
    }

    log("----------------------------------------------------")
    const entranceFee = networkConfig[chainId]["entranceFee"]
    const gasLane = networkConfig[chainId]["gasLane"]
    const gasLimit = networkConfig[chainId]["callbackGasLimit"]
    const intervel = networkConfig[chainId]["intervel"]


    const args = [vrfCoordinatorV2Address, entranceFee, gasLane, subscriptionId, gasLimit, intervel]
    const raffle = await deploy("Raffle", {
        from: deployer,
        args: args,
        log: true,
        waitConfirmations: network.config.blockConfirmations || 1,
    })

    // Ensure the Raffle contract is a valid consumer of the VRFCoordinatorV2Mock contract.
    if (developmentChain.includes(network.name)) {
        const vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
        await vrfCoordinatorV2Mock.addConsumer(subscriptionId, raffle.address)
    }

    // Verify the deployment
    if (!developmentChain.includes(network.name) && process.env.ETHERSCAN_API_KEY) {
        log("Verifying...")
        await verify(raffle.address, arguments)
    }

    log("Enter lottery with command:")
    const networkName = network.name == "hardhat" ? "localhost" : network.name
    log(`yarn hardhat run scripts/enterRaffle.js --network ${networkName}`)
    log("----------------------------------------------------")
}

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