chapter15:TypeError: customChains is not iterable

[Bilalbasheer100]

when iam verifying the contract this error pops up....my contract is deployed in sepolia test network but icant verify

hardhat.config.js
______________
etherscan: {        apiKey: {
            sepolia: ETHERSCAN_API_KEY,
            polygon: POLYGONSCAN_API_KEY,
        },
    },

Error
____

TypeError: customChains is not iterable

[Bilalbasheer100]

i have already used the methods specified in the discussions,unfortunately none of the actually works.

[saihaj]

Can you share a minimal reproduction. You can either use StackBlitz, CodeSandbox or a public GitHub repo.

[azf20]

Hey @Bilalbasheer100 this looks like an issue with contract verification in Hardhat rather than relating to Graph Tooling (e.g. graph-cli)? Please re-ping if not