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New RPC Url: http://127.0.0.1:8545/
ChainId: 31337
Could not fetch chain ID. Is your RPC URL correct?

I am trying to run a local blockchain using hardhat but during configuration it is showing this error. I googled it and got this as the RPC url. Thanks for helping!

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  • Do you have a hardhat node running in the background while trying to access it?
    – Mouradif
    Aug 26, 2023 at 19:50

1 Answer 1

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Add this to your hardhat.config.js and then do npx hardhat node. After that it should not show any error in your metamask.

networks: { hardhat: { chainId: 1337 } }

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