Lesson 6 TypeError: simpleStorage.retrieve is not a function

[toppyc4]

I followed along until lesson 6 at 9:08:50 of the video. When I tried to run "yarn hardhat run scripts/deploy.js" command, my code worked until the simpleStorage.retrieve line (21) then I got "TypeError: simpleStorage.retrieve is not a function" error.
Here is my deploy.js :

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

//async main
async function main() {
    const SimpleStorageFactory = await ethers.getContractFactory(
        "SimpleStorage"
    )
    console.log("Deploying contract . . . ")
    const simpleStorage = await SimpleStorageFactory.deploy()
    await simpleStorage.deployed()

    console.log(`Deployed contract to: ${simpleStorage.address}`)
    // what happens when we deploy to our hardhat network?
    // 11155111 is sepolia testnet chainId
    if (network.config.chainId === 11155111 && process.env.ETHERSCAN_API_KEY) {
        await simpleStorage.deployTransaction.wait(6)
        await verify(simpleStorage.address, [])
    }

    const currentValue = await simpleStorage.retrieve()
    console.log(`Current Value is: ${currentValue}`)

    // Update the current value
    const transactionResponse = await simpleStorage.store(7)
    await transactionResponse.wait(1)
    const updatedValue = await simpleStorage.retrieve()
    console.log(`Updated Value is: ${updatedValue}`)
}

async function verify(contractAddress, args) {
    console.log("Verifying contract . . . ")

    try {
        await run("verify:verify", {
            address: contractAddress,
            constructorArguments: args,
        })
    } catch (err) {
        if (err.massge.toLowerCase().includes("already verified")) {
            console.log("Already Verified!")
        } else {
            console.log(`verify() error: ${err}`)
        }
    }
}

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

and hardhat.config.js:

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

/** @type import('hardhat/config').HardhatUserConfig */

const SEPOLIA_RPC_URL = process.env.SEPOLIA_RPC_URL
// const SEPOLIA_RPC_URL_KEY = process.env.SEPOLIA_RPC_URL_KEY
const PRIVATE_KEY = process.env.PRIVATE_KEY
const ETHERSCAN_APT_KEY = process.env.ETHERSCAN_APT_KEY

module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        sepolia: {
            url: SEPOLIA_RPC_URL,
            accounts: [PRIVATE_KEY],
            chainId: 11155111,
        },
    },
    solidity: "0.8.9",
    etherscan: {
        // Your API key for Etherscan
        // Obtain one at https://etherscan.io/
        apiKey: ETHERSCAN_APT_KEY,
    },
}

what did I missed
Appreciate your help and may the force be with u

[HarshDev56]

@toppyc4 can you provide link of your repo ? i will check

[toppyc4]

I forgot the retrieve function in my SimpleStorage.sol. Thanks for your attempt to help!

[alymurtazamemon]

@toppyc4 The program is not able to recognize the retrieve function. Please check the spelling, is it same as the one defined in the contract.

[toppyc4]

Seem like I forget the retrieve function in my contract, thanks.🙏

[HarshDev56]

@toppyc4 i checked your code you don't have retrieve function first you need to create one then you can call that function .

[toppyc4]

right, thanks again