Lesson 9: TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')

[arifulone]

I'm on Lesson 9: Hardhat Smart Contract Lottery. 15:20:03 on youtube.
after I run this command :
hh deploy

Gave this error :

Nothing to compile
An unexpected error occurred:

Error: ERROR processing skip func of /home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/deploy/00-deploy-mocks.js:
TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')
    at Object.<anonymous> (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-ethers/src/internal/ethers-provider-wrapper.ts:4:61)
    at Module._compile (node:internal/modules/cjs/loader:1103:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:822:12)
    at Module.require (node:internal/modules/cjs/loader:1005:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-ethers/src/internal/provider-proxy.ts:9:1)
    at Module._compile (node:internal/modules/cjs/loader:1103:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1157:10)
    at DeploymentsManager.executeDeployScripts (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1100:15)
    at DeploymentsManager.runDeploy (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1052:16)
    at SimpleTaskDefinition.action (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/index.ts:438:5)
    at Environment._runTaskDefinition (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:311:14)
    at SimpleTaskDefinition.action (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/index.ts:584:32)
    at Environment._runTaskDefinition (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:311:14)
    at Environment.run (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:159:14)
    at SimpleTaskDefinition.action (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/index.ts:669:5)
    at Environment._runTaskDefinition (/home/arifulfeni/folder/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:311:14)

00-deploy-mocks.js:

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

const BASE_FEE = ethers.utils.parseEther("0.25") // 0.25 is the  premium . it costs 0.25 LINK per request
const GAS_PRICE_LINK = 1e9 // calculated value based on  the gas price of the chain

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,
        })
        log("Mocks Deployed! ")
        log("_______________________")

    }
}

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

01-deploy-raffle.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("2")

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)) {
        const vrfCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock")
        vrfCoordinatorV2Address = vrfCoordinatorV2Mock.address
        const transactionResponse = await vrfCoordinatorV2Mock.createSubscription()
        const transactionReceipt = await transactionResponse.wait(1)
        subscriptionId = transactionReceipt.events[0].args.subId

        // Fund the subscription
        // usually, you'd need the link token on a real network
        await vrfCoordinatorV2Mock.fundSubscription(subscriptionId, VRF_SUB_FUND_AMOUNT)
    } else {
        vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"]
        subscriptionId = networkConfig[chainId]["subscriptionId"]
    }

    const entranceFee = networkConfig[chainId]["entranceFee"]
    const gasLane = networkConfig[chainId]["gasLane"]
    const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"]
    const interval = networkConfig[chainId]["interval"]

    const args = [
        vrfCoordinatorV2Address,
        entranceFee,
        gasLane,
        subscriptionId,
        callbackGasLimit,
        interval,
    ]
    const raffle = await deploy("Raffle", {
        from: deployer,
        args: args,
        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"]

helper-hardhat-config.js:

const { network, ethers } = require("hardhat")

networkConfig = {
    5: {
        name: "goerli",
        vrfCoordinatorV2: "0x2Ca8E0C643bDe4C2E08ab1fA0da3401AdAD7734D",
        etntranceFee: ethers.utils.parseETher("0.01"),
        gasLane: "0x79d3d8832d904592c0bf9818b621522c988bb8b0c05cdc3b15aea1b6e8db0c15",
        subscriptionId: "0",
        callbackGasLimit: "500000",
        interval: "30",
    },
    31337: {
        name: "hardhat",
        etntranceFee: ethers.utils.parseETher("0.01"),
        gasLane: "0x79d3d8832d904592c0bf9818b621522c988bb8b0c05cdc3b15aea1b6e8db0c15",
        callbackGasLimit: "500000",
    },
}

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

module.exports = {
    networkConfig,
    developmentChains,
}

[paulcoffee85]

There's a few things. for now , You'll also need to add a few lines of code to involve updates.

etntranceFee: ethers.utils.parseETher("0.01"), <== TYPO in entrance & parseEther

[paulcoffee85]

Also, change version of ethers.

#4924 (comment)