Lesson 8 Internal Json-rpc error while withdrawing

[yash-2138]

Unable to withdraw eth from the smart contract
gettting an Internal json-rpc error

Index.js

import {ethers} from "./ethers.5.6.esm.min.js"
import {abi, contractAddress} from  "./constants.js"

const connectButton = document.getElementById("connectButton")
const fundButton = document.getElementById("fundButton")
const balanceButton = document.getElementById("balanceButton")
const withdrawButton = document.getElementById("withdrawButton")
connectButton.onclick = connect
fundButton.onclick = fund
balanceButton.onclick = getBalance
withdrawButton.onclick = withdraw

async function connect() {
    if (typeof window.ethereum !== "undefined") {
        await window.ethereum.request({ method: "eth_requestAccounts" })
       connectButton.innerHTML = "Connected!"
    } else {
       connectButton.innerHTML = "Please Install MetaMask!"
    }
}

async function getBalance(){
    if(typeof window.ethereum !== "undefined"){
        const provider = new ethers.providers.Web3Provider(window.ethereum)
        try{
            const balance = await provider.getBalance(contractAddress)
            console.log(ethers.utils.formatEther(balance))
        }catch(error){
            console.log(error)
        }
    }
    else{
        balanceButton.innerHTML = "Please Install MetaMask"
    }
}

//to fund we need 1. provide / connection to the blockchain
//                2. signer / wallet / someone with some gas
//                3. contract that we are interacting with --> ABI & address
async function fund() {
    const ethAmount = document.getElementById("ethAmount").value
    console.log(`Funding with ${ethAmount}...`)
    if(typeof window.ethereum !=="undefined"){
        const provider = new ethers.providers.Web3Provider(window.ethereum)  //this line will look for http endpoint in the metamask , provider will connect to metamask
        const signer = provider.getSigner() // this will return whichever wallet is connected to the provider
        const contract = new ethers.Contract(contractAddress, abi, signer)
        
        try{
            const transactionResponse = await contract.fund({value: ethers.utils.parseEther(ethAmount,)})
            await listenForTransactionMine(transactionResponse, provider)
            console.log("Done!")
        }catch(error){
            console.log(error)
        }
    }
    else{
        fundButton.innerHTML = "Please Install MetaMask"
    }
}

async function withdraw() {
    console.log("Withdrawing...")
    if(typeof window.ethereum !== "undefined"){
        const provider = new ethers.providers.Web3Provider(window.ethereum)
        const signer = provider.getSigner()
        const contract = new ethers.Contract(contractAddress,abi, signer)
        try{
            const transactionResponse = await contract.withdraw()
            await listenForTransactionMine(transactionResponse)
        }catch(error){
            console.log(error)
        }
    }
    else{
        withdrawButton.innerHTML = "Please Install Metamask"
    }
}

function listenForTransactionMine(transactionResponse, provider){
    console.log(`Mining ${transactionResponse.hash} ..`)
    // return new Promise() // to create a listner for the blockchain
    return new Promise((resolve, reject) => {
        provider.once(transactionResponse.hash, function (transactionReceipt) {
            console.log(`Completed with ${transactionReceipt.confirmations} confirmations`)
            resolve()
        })
    })
    
}

[krakxn]

This can be fixed by assigning a gas limit (manually) in the FundMe contract (or via Hardhat config); then, deploy this new contract and also update your constants file to account for the address of this new contract.

[yash-2138]

can you provide the line to add to set gas limit?

[gulcest]

I run into the same issue. Were you able to solve this by adding a gas limit? And, where and how did you add it? @krakxn @yash-2138

[adityabhattad2021]

Go to metamask >MAKE SURE YOU ARE USING HARDHAT LOCALHOST > from the account you imported from hardhat > settings > advanced > reset account.