L6: Connect Timeout Error

[wendy556]

I am currently deploying and verifying the contract using hardhat. I run into this error, can someone please help me:)? (using Astrill VPN don't know if is related)
after running this command: yarn hardhat run scripts/deploy.js --network goerli
OUTPUT:

yarn run v1.22.19
warning ../../../package.json: No license field
$ '/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/.bin/hardhat' run scripts/deploy.js --network goerli
Deploying contract...
Deployed contract to: 0x9D568c60B07658e5Ff232E83256EA48Afe3897dc
Waiting for block confirmations...
Verifying contract...
Nothing to compile
NomicLabsHardhatPluginError: Failed to send contract verification request.
Endpoint URL: https://api-goerli.etherscan.io/api
Reason: Connect Timeout Error
    at verifyContract (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/@nomiclabs/hardhat-etherscan/src/etherscan/EtherscanService.ts:35:11)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at attemptVerification (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:474:20)
    at SimpleTaskDefinition.action (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:778:48)
    at Environment._runTaskDefinition (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/hardhat/src/internal/core/runtime-environment.ts:308:14)
    at Environment.run (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/hardhat/src/internal/core/runtime-environment.ts:156:14)
    at SimpleTaskDefinition.verifySubtask [as action] (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:312:28)
    at Environment._runTaskDefinition (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/hardhat/src/internal/core/runtime-environment.ts:308:14)
    at Environment.run (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/hardhat/src/internal/core/runtime-environment.ts:156:14)
    at verify (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/scripts/deploy.js:36:9)

    Caused by: ConnectTimeoutError: Connect Timeout Error
        at onConnectTimeout (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/undici/lib/core/connect.js:176:24)
        at /mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/undici/lib/core/connect.js:123:46
        at Immediate._onImmediate (/mnt/c/Users/WENDY LIU/Desktop/web3/hardhat-simple-storage/node_modules/undici/lib/core/connect.js:164:9)
        at processImmediate (node:internal/timers:471:21)
Current Value is: 0
Updated Value is: 7                                       [#################################

This is my deploy.js:

// imports
const { ethers, run, network } = require("hardhat")
const {
    ContractFunctionVisibility,
} = require("hardhat/internal/hardhat-network/stack-traces/model")

// asunc 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}`)
    // console.log(network.config)
    if (network.config.chainId === 5 && process.env.ETHERSCAN_API_KEY) {
        console.log("Waiting for block confirmations...")
        await simpleStorage.deployTransaction.wait(3) // it takes some time for etherscan to know this transaction
        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 (e) {
        if (e.message.toLowerCase().includes("already verified")) {
            console.log("Already Verified!")
        } else {
            console.log(e)
        }
    }
}

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

[Nlferu]

Hello @wendy556

Definitely check your .env file if your Etherscan Api Key is correct. If it is please be informed that verifying contracts on testnet is sometimes tricky and for example depends on time of the day. It sometimes get laggy and you wont be able to verify any contract, so just please try again later when network hopefully will be in better shape. Correct me if I'm wrong but I have encountered this type of issues many times at night CET zone and without chaning any code I was able to verify contract without any problems and delays at morning.

[alymurtazamemon]

@wendy556 Do you have this in hardhat.config.js file?

etherscan: {
    apiKey: ETHERSCAN_API_KEY,
  },

[mikon0606]

I met the same issue.And I change to sepolia testnet, still the same

ConnectTimeoutError: Connect Timeout Error
at onConnectTimeout (/Users/mika/Desktop/solidity/hardhat-fund-me-fcc/node_modules/undici/lib/core/connect.js:182:24)
at /Users/mika/Desktop/solidity/hardhat-fund-me-fcc/node_modules/undici/lib/core/connect.js:129:46
at Immediate._onImmediate (/Users/mika/Desktop/solidity/hardhat-fund-me-fcc/node_modules/undici/lib/core/connect.js:170:9)
at processImmediate (node:internal/timers:476:21) {
code: 'UND_ERR_CONNECT_TIMEOUT'

[alymurtazamemon]

@wendy556 This is your internet connection issue.

[mikon0606]

@wendy556 This is your internet connection issue.

I change a few of different internet,but still the same.Make me crazy.
Do I need show you my code?

[alymurtazamemon]

@wendy556 Yes leave the repo link.