hardhat fundme : Error HH8: There's one or more errors in your config file: * Invalid account: #0 for network: sepolia - Expected string, received undefined

[Chrisronald]

please can someone help out?

[Nlferu]

Hello @Chrisronald

Semms like you have incorrectly defined PRIVATE_KEY in your .env file. It should look like below:

PRIVATE_KEY = b7aacde78b12299907c6dd6c8d5b0ac6fea04f166di04709978e1cff0354f1da

If it is set as above you can change below code:

// Add `.config()` to below import
require("dotenv").config()

module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        sepolia: {
            url: SEPOLIA_RPC_URL,
            // Just remove [] array from here
            accounts: process.env.PRIVATE_KEY,
            chainId: 11155111,
            blockConfirmations: 6,
        },

Or just call it as you should like below:

module.exports = {
    defaultNetwork: "hardhat",
    networks: {
        sepolia: {
            url: SEPOLIA_RPC_URL,
            accounts: [PRIVATE_KEY],
            chainId: 11155111,
            blockConfirmations: 6,
        },

[alymurtazamemon]

@Chrisronald You forgot config() after require("dotenv")

require("dotenv").config();

[Nlferu]

True, included it in my response too, but for me somehow it does not matter if I have .config or not