L6：NetworkRequestError: A network request failed. This is an error from the block explorer, not Hardhat. Error: connect ECONNREFUSED 54.89.135.129:443 at Etherscan.isVerified

[icanci]

When I deploying my contract and verify the source code, I got the issue that 'NetworkRequestError: A network request failed. This is an error from the block explorer, not Hardhat. Error: connect ECONNREFUSED 54.89.135.129:443
at Etherscan.isVerified' , i have the same code with the lesson. I'm not sure if it's a problem with my network, but I am open the vpn and I can deploy the Contract.

the hardhat.config.js

const SEPOLIA_RPC_URL = process.env.SEPOLIA_RPC_URL
const SEPOLIA_PRIVATE_KEY = process.env.SEPOLIA_PRIVATE_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY

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

// yarn hardhat run scripts/deploy.js --network sepolia
module.exports = {
    defauleNetwork: "hardhat",
    networks: {
        sepolia: {
            url: SEPOLIA_RPC_URL,
            accounts: [SEPOLIA_PRIVATE_KEY],
            chainId: 11155111, // HardhatError: HH101: Hardhat was set to use chain id 11155420, but connected to a chain with id 11155111.
        },
    },
    solidity: "0.8.7",
    etherscan: {
        apiKey: ETHERSCAN_API_KEY,
    },
}

the deolpy.js

// imports
// run 可以执行 hardhat 的所有任务 task
const { ethers, run, network } = require("hardhat")

async function main() {
    // get a factory
    const SimpleStorageFactory =
        await ethers.getContractFactory("SimpleStorage")

    console.log("Deploying contract...")
    //what's the private key

    //what's the rpc url

    const simpleStorage = await SimpleStorageFactory.deploy()
    console.log(`simple storage deployed: ${simpleStorage.target}`)

    console.log(network.config)

    if (network.config.chainId === 11155111 && process.env.ETHERSCAN_API_KEY) {
        // 要等待有区块验证了之后，在进行确认，否则可能还刷不出来
        await simpleStorage.deploymentTransaction().wait(6)
        await verify(simpleStorage.target, [])
    } else {
        console.log("Current network is test network,do not need verify")
    }

    const currentValue = await simpleStorage.retrieve()
    console.log(`currentValue: ${currentValue}`)
    // update the value
    const transactionResp = await simpleStorage.store(7)
    await transactionResp.wait(1)
    const newValue = await simpleStorage.retrieve()
    console.log(`newValue: ${newValue}`)
}

// 验证合约
async function verify(contractAddress, args) {
    console.log("Verify contract...")
    // 第一个是要执行的命令，第二个参数是要执行任务的参数 包含实际对象的参数
    try {
        await run("verify:verify", {
            address: contractAddress,
            constructorArguments: args,
        })
    } catch (error) {
        if (error.message.toLowerCase().includes("already verified")) {
            console.log("already verified")
        } else {
            console.log(error)
        }
    }
}

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

and the error

Verify contract...
NetworkRequestError: A network request failed. This is an error from the block explorer, not Hardhat. Error: connect ECONNREFUSED 54.89.135.129:443
    at Etherscan.isVerified (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/@nomicfoundation/hardhat-verify/src/internal/etherscan.ts:111:13)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at SimpleTaskDefinition.action (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/@nomicfoundation/hardhat-verify/src/internal/tasks/etherscan.ts:105:24)
    at Environment._runTaskDefinition (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:359:14)
    at Environment.run (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:192:14)
    at SimpleTaskDefinition.action (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/@nomicfoundation/hardhat-verify/src/index.ts:298:9)
    at Environment._runTaskDefinition (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:359:14)
    at Environment.run (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:192:14)
    at verify (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/scripts/deploy.js:43:9)
    at main (/Users/icanci/Solidity/Solidity-Learn-for-Hardhat/hardhat-simple-storage-fcc/scripts/deploy.js:24:9)
currentValue: 0
newValue: 7
✨  Done in 104.27s.

[icanci]

It may be an issue with my network, and I will try running it again tomorrow morning

[747164090]

Hello, I have also encountered the same problem. Have you solved it

[icanci]

这是来自QQ邮箱的假期自动回复邮件。您好，您的邮件我已经收到，我会尽快回复，谢谢。