* Invalid value undefined for HardhatConfig.networks.rinkeby.url - Expected a value of type string.

[rileymross]

When I try to run deploy.js on hardhat it won't work when I try with rinkeby testnet.

Error HH8: There's one or more errors in your config file:

  * Invalid value undefined for HardhatConfig.networks.rinkeby.url - Expected a value of type string.

And here is my hardhat.config.js script:

require("@nomiclabs/hardhat-waffle")
require("dotenv").config
require("@nomiclabs/hardhat-etherscan")
// This is a sample Hardhat task. To learn how to create your own go to
// https://hardhat.org/guides/create-task.html
task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
    const accounts = await hre.ethers.getSigners()

    for (const account of accounts) {
        console.log(account.address)
    }
})

// You need to export an object to set up your config
// Go to https://hardhat.org/config/ to learn more

/**
 * @type import('hardhat/config').HardhatUserConfig
 */
const RINKEBY_RPC_URL = process.env.RINKEBY_RPC_URL
const PRIVATE_KEY = process.env.PRIVATE_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY

module.exports = {
    solidity: "0.8.8",
    defaultNetwork: "hardhat",
    networks: {
        rinkeby: {
            url: RINKEBY_RPC_URL,
            account: [PRIVATE_KEY],
            chainId: 4,
        },
    },
    etherscan: {
        apiKey: ETHERSCAN_API_KEY,
    },
}

[alymurtazamemon]

@rileymross You just have to take the URL from the Alchemy dashboard and private key from the meta mask.

Replace RPC_URL and PRIVATE KEY with the above things inside .env

[rileymross]

I tried that but then it gave me this error:

Error HH8: There's one or more errors in your config file:

  * Invalid value undefined for HardhatConfig.networks.rinkeby.url - Expected a value of type string.
  * Invalid account: #0 for network: rinkeby - Expected string, received undefined
  
To learn more about Hardhat's configuration, please go to https://hardhat.org/config/

[mattjaf]

Sounds like the issue is with your config file. Do you mind pasting it?

[mattjaf]

From my understanding, hardhat isn't using your metamask to deploy the contract. It uses an RPC to connect to the blockchain and your private_key/nmenonic to sign transactions.

If you want to add alchemy to your metamask to interact with a GUI front_end, click the network dropdown, then hit "add network" and enter the information for the chain you want to connect to providing your "alchemy RPC url"

[rileymross]

I changed the question because I realized it didn't have to do with alchemy or metamask. it's something with the config file.

[mattjaf]

Is your .env file situated?

RINKEBY_RPC_URL="xxxxxx"
PRIVATE_KEY='0x..........................................'
ETHERSCAN_API_KEY=xxxxxxxxx

[rileymross]

Yes. doesn't help.

[gmluqa]

https://hardhat.org/config#available-config-options

I think there's a typo with account in your module exports, try accounts instead.

rinkeby: {
            url: RINKEBY_RPC_URL,
            accounts: [PRIVATE_KEY],
            chainId: 4,
        },

[rileymross]

No, I remember that at party of the lesson and I tried that. It just gave me another error. It has nothing to do with this error. I wish people would stop assuming it's the same issue.

[mattjaf]

have you tried copy and pasting the the config from the repo?

[rileymross]

I might do that when I finish the lesson. Only problem is they still expect you to provide your own roc and private key so I would have to make sure that isn't the problem.
I just want to make sure I know how to use hardhat crosschain

[mattjaf]

If its EVM compatible, change the chainId and the RPC URL, and your pretty much good to go.

and what @gmluqa said about changing account to accounts, id suggest that as well

[rileymross]

I figured it out on my own. I was supposed to put quotation marks around the RINKEBY_RPC_URL
Also, you only need to make account plural if you have mutiple private keys in that line.
However, moving along I realized its better to simply put procces.env.[ENV information]
This question ended up having some people answering it but the questions/answers became unclear along the way. @mattjaf @gmluqa and @ali-thegilfoyle still knew what they were talking about.

[0xronin]

.....would be cool if you gave some of us some credit.

Lmao. So true!

[rileymross]

.....would be cool if you gave some of us some credit.

Lmao. So true!

Even though I did... Which was generous of me given that he didn't technically give me the answer I requested.
In fact, I tried exactly what @mattjaf told me to with adding Alchemy to my metamask and it didn't even allow me to add it due to how I already had the rinkeby testnet on there (because it's the same chain ID).
Maybe you shouldn't judge hard working people like myself who are genuinely serious about learning coding for the sake of being productive. Still don't know why Alchemy doesn't work for me, but it doesn't look like it's a necessary tool for now.
In fact for the record, I recently learned about how other languages like Pact are more efficient than Solidity so while I learned a good bit from following about 10 hours of this course, I've decided to steer that knowledge towards learning Pact on the Kadena blockchain since I've come to believe that's more useful in the future. Glad to know that there are more communities out there in the web 3 sphere, not just the slime that care about making fun of people and demanding github clout just because someone has a different way of thinking.
You're probably not going to respond to this because you know I'm right, but for the record, we all know you read it.

[0xronin]

Ngmi

[gmluqa]

I don't mind "not getting github rep points" if I didn't directly contribute towards the answer. I don't see a need for there to be toxicity in the air from any party, we're here to learn how to make decentralized applications, let's just focus on that and leave the petty drama aside.

[rileymross]

Well for the record, anyone who insults me for not directly answering every person who happened to respond to this discussion must be a very centralist thinker. If they really valued a decentralized system then they wouldn't care about whether I acknowledged and credited everybody. I don't mind being toxic in response to people being toxic first.

[Benrockiee]

@rileymross Glad you figured it out