Lesson: 9 ,I have deploy ont sepolia, but got verify erro : TypeError: customChains is not iterable

[Tang-hw]

Hi , please help me .
error code:

owen@DESKTOP-OWEN:~/hh-fcc/hardhat-smartcontract-lottery-fcc$ yarn hardhat deploy --network sepolia
yarn run v1.22.22
$ /home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/.bin/hardhat deploy --network sepolia
Nothing to compile
----------------------------------------------------
deploying "Raffle" (tx: 0x52e41391f21fb0d78b4e519f1389755ab08db43c720e9a7e6b900f82d1ae4ef3)...: deployed at 0x66AEa18112501298988F531c3159D7B4a72Ce6cd with 1224148 gas
Verifying...
Verifying contract...
TypeError: customChains is not iterable
    at getEtherscanEndpoints (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/network/prober.ts:23:37)
    at processTicksAndRejections (node:internal/process/task_queues:95:5)
    at Environment._runTaskDefinition (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:351:14)
    at Environment.run (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:184:14)
    at SimpleTaskDefinition.verifySubtask [as action] (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/@nomiclabs/hardhat-etherscan/src/index.ts:221:30)
    at Environment._runTaskDefinition (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:351:14)
    at Environment.run (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat/src/internal/core/runtime-environment.ts:184:14)
    at verify (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/utils/verify.js:9:9)
    at Object.module.exports [as func] (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js:60:9)
    at DeploymentsManager.executeDeployScripts (/home/owen/hh-fcc/hardhat-smartcontract-lottery-fcc/node_modules/hardhat-deploy/src/DeploymentsManager.ts:1220:22)
Enter lottery with command:
yarn hardhat run scripts/enterRaffle.js --network sepolia
----------------------------------------------------
Done in 76.37s.

verify.js

// we can't have these functions in our `helper-hardhat-config`
// since these use the hardhat library
// and it would be a circular dependency
const { run } = require("hardhat")

const verify = async (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)
        }
    }
}

module.exports = {
    verify,
}