Lesson 10: TypeError: can't access property "toString", _ctx.sent is undefined

[hoangglong-nguyen]

I've tried a lot of solutions on this thread relating to this bug, but none of them seem to work. My hardhat-localhost is running with metamask connected. I also console.log abi, raffleAddress, chainId and they all seem to have been connected correctly. I'm suspecting my runContractFunction is not working properly but I don't know how to fix it. Please help.

Here is my error and my console

Here is my 02-update-front-end.js

const { frontEndContractsFile, frontEndAbiFile } = require("../helper-hardhat-config")
const fs = require("fs")
const { network } = require("hardhat")

module.exports = async () => {
    if (process.env.UPDATE_FRONT_END) {
        console.log("Writing to front end...")
        await updateContractAddresses()
        await updateAbi()
        console.log("Front end written!")
    }
}

async function updateAbi() {
    const raffle = await ethers.getContract("Raffle")
    fs.writeFileSync(frontEndAbiFile, JSON.stringify(raffle.interface.fragments))
}

async function updateContractAddresses() {
    const raffle = await ethers.getContract("Raffle")
    const contractAddresses = JSON.parse(fs.readFileSync(frontEndContractsFile, "utf8"))
    if (network.config.chainId.toString() in contractAddresses) {
        if (!contractAddresses[network.config.chainId.toString()].includes(raffle.address)) {
            contractAddresses[network.config.chainId.toString()] = raffle.address
        }
    } else {
        contractAddresses[network.config.chainId.toString()] = [raffle.address]
    }
    fs.writeFileSync(frontEndContractsFile, JSON.stringify(contractAddresses))
}
module.exports.tags = ["all", "frontend"]

My LotteryEntrance.js

/*eslint-disable*/
import { contractAddresses, abi } from "../constants"
import { useMoralis, useWeb3Contract } from "react-moralis"
import { useEffect, useState } from "react"
import { useNotification } from "web3uikit"
import { ethers } from "ethers"

export default function LotteryEntrance() {
    const { isWeb3Enabled, chainId: chainIdHex } = useMoralis()
    const chainId = parseInt(chainIdHex)
    const raffleAddress = chainId in contractAddresses ? contractAddresses[chainId] : null

    const [entranceFee, setEntranceFee] = useState("0")
    const [numberOfPlayers, setNumberOfPlayers] = useState("0")
    const [recentWinner, setRecentWinner] = useState("0")

    const dispatch = useNotification()

    console.log(chainId)
    console.log(raffleAddress)
    console.log(abi)

    const {
        runContractFunction: enterRaffle,
        data: enterTxResponse,
        isLoading,
        isFetching,
    } = useWeb3Contract({
        abi: abi,
        contractAddress: raffleAddress,
        functionName: "enterRaffle",
        msgValue: entranceFee,
        params: {},
    })

    /* View Functions */

    const { runContractFunction: getEntranceFee } = useWeb3Contract({
        abi: abi,
        contractAddress: raffleAddress, // specify the networkId
        functionName: "getEntranceFee",
        params: {},
    })

    const { runContractFunction: getPlayersNumber } = useWeb3Contract({
        abi: abi,
        contractAddress: raffleAddress,
        functionName: "getNumberOfPlayers",
        params: {},
    })

    const { runContractFunction: getRecentWinner } = useWeb3Contract({
        abi: abi,
        contractAddress: raffleAddress,
        functionName: "getRecentWinner",
        params: {},
    })

    async function updateUIValues() {

//MY BUG HERE
        const entranceFeeFromCall = (await getEntranceFee()).toString()
        const numPlayersFromCall = (await getPlayersNumber()).toString()
        const recentWinnerFromCall = (await getRecentWinner()).toString()

        setEntranceFee(entranceFeeFromCall)
        setNumberOfPlayers(numPlayersFromCall)
        setRecentWinner(recentWinnerFromCall)
    }

    useEffect(() => {
        if (isWeb3Enabled) {
            updateUIValues()
        }
    }, [isWeb3Enabled])

    const handleNewNotification = () => {
        dispatch({
            type: "info",
            message: "Transaction Complete!",
            title: "Transaction Notification",
            position: "topR",
            icon: "bell",
        })
    }

    const handleSuccess = async (tx) => {
        try {
            await tx.wait(1)
            handleNewNotification(tx)
            updateUIValues()
        } catch (error) {
            console.log(error)
        }
    }

    return (
        <div className="p-5">
            <h1 className="py-4 px-4 font-bold text-3xl">Lottery</h1>
            {raffleAddress ? (
                <>
                    <button
                        className="bg-blue-500 hover:bg-blue-700 text-white font-bold py-2 px-4 rounded ml-auto"
                        onClick={async () =>
                            await enterRaffle({
                                onSuccess: handleSuccess,
                                onError: (error) => console.log(error),
                            })
                        }
                        disabled={isLoading || isFetching}
                    >
                        {isLoading || isFetching ? (
                            <div className="animate-spin spinner-border h-8 w-8 border-b-2 rounded-full"></div>
                        ) : (
                            "Enter Raffle"
                        )}
                    </button>
                    <div>Entrance Fee: {ethers.utils.formatUnits(entranceFee, "ether")} ETH</div>
                    <div>The current number of players is: {numberOfPlayers}</div>
                    <div>The most previous winner was: {recentWinner}</div>
                </>
            ) : (
                <div>Please connect to a supported chain </div>
            )}
        </div>
    )
}

[Blockchain-Oracle]

    const raffleAddress = chainId in contractAddresses ? contractAddresses[chainId] : null

change that line of code to

    const raffleAddress = chainId in contractAddresses ? contractAddresses[chainId][0] : null

you left the array [0]

@hoangglong-nguyen

[eik-1]

Got the same bug
not able to solve it

[Blockchain-Oracle]

send in your constant i.e your abi and contract address
make sure this successfully push to constants from the back end

[eik-1]

#6394
here is my problem bro please take a look