LESSON 9: Error: invalid contract address or ENS name [15:19:55]

[DorianDaSilva]

Error: ERROR processing /home/hh-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js:
Error: invalid contract address or ENS name (argument="addressOrName", value=undefined, code=INVALID_ARGUMENT, version=contracts/5.6.2)

======================================================================================

Terminal is returning the above error after deploying mocks when running hh deploy or yarn hardhat deploy

I was unable to find a solution online & my 01-deploy-raffle.js seems identical from the one in the course.

Does anyone have a suggestion on how to fix this bug, plz?

[baocongchen]

As the error log shows, your addressOrName is undefined. Check if you already passed a value to the argument.

[DorianDaSilva]

I got that bit but I don't understand what name or argument it is refering to. VRFCoordinatorV2Mock.sol is imported from from repo & 01-deploy-raffle.js is identical to the video.

I don't see any typos or discrepencies at all.

[DorianDaSilva]

const { network, ethers } = require("hardhat");
const {
  developmentChains,
  networkConfig,
} = require("../helper-hardhat-config");
const { verify } = require("../helper-hardhat-config");

const VRF_SUB_FUND_AMOUNT = ethers.utils.parseEther("30");

module.exports = async function ({ getNamedAccounts, deployments }) {
  const { deploy, log } = deployments;
  const { deployer } = await getNamedAccounts();
  const chainId = network.config.chainId;
  let vrfCoordinatorV2Address, subscriptionId;

  if (developmentChains.includes(network.name)) {
    const VRFCoordinatorV2Mock = await ethers.getContractAt(
      "VRFCoordinatorV2Mock"
    );
    vrfCoordinatorV2Address = VRFCoordinatorV2Mock.address;
    const transactionResponse = await VRFCoordinatorV2Mock.createSubscription();
    const transactionReceipt = await transactionResponse.wait(1);
    subscriptionId = transactionReceipt.events[0].args.subId;
    await VRFCoordinatorV2Mock.fundSubscription(
      subscriptionId,
      VRF_SUB_FUND_AMOUNT
    );
  } else {
    vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"];
    subscriptionId = networkConfig[chainId]["subscritpionId"];
  }

  const entranceFee = networkConfig[chainId]["entranceFee"];
  const gasLane = networkConfig[chainId]["gasLane"];
  const callbackGasLimit = networkConfig[chainId]["callbackGasLimit"];
  const interval = networkConfig[chainId]["interval"];

  const args = [
    vrfCoordinatorV2Address,
    entranceFee,
    gasLane,
    subscriptionId,
    callbackGasLimit,
    interval,
  ];
  const raffle = await deploy("Raffle", {
    from: deployer,
    args: args,
    log: true,
    waitConfirmations: network.config.blockConfirmations || 1,
  });

  if (
    !developmentChains.includes(network.name) &&
    process.env.ETHERSCAN_API_KEY
  ) {
    log("verifying...");
    await verify(raffle.address, args);
  }

  log(
    "--------------------------------------------------------------------------"
  );
};

module.exports.tags = ["all", "raffle"];

=============================================================================

Above the deploy script - what am I missing?

[baocongchen]

Can you paste your constructor code here so I look into it?

[DorianDaSilva]

Raffle.sol Constructor below

    constructor(
        address vrfCoordinatorV2, // Contract address
        uint256 entranceFee,
        bytes32 gasLane,
        uint64 subscriptionId,
        uint32 callbackGasLimit,
        uint256 interval
    ) VRFConsumerBaseV2(vrfCoordinatorV2){
        i_entranceFee = entranceFee;
        i_vrfCoordinator = VRFCoordinatorV2Interface(vrfCoordinatorV2);
        i_gasLane = gasLane;
        i_subscriptionId = subscriptionId;
        i_callbackGasLimit = callbackGasLimit;
        s_raffleState = RaffleState.OPEN;
        s_lastTimeStamp = block.timestamp;
        i_interval = interval;
    }

[baocongchen]

Please provide the code that includes something like require("../artifacts/ or artifacts.require
You can find it by pasting require("../artifacts/ in the search tab in VS Code.

[baocongchen]

In deployer.deploy(someContract, //some arguments), you want to make sure you pass 6 arguments of the correct data type.

[DorianDaSilva]

Not sure to understand what you are refering to. Care to share the code snippet that you suggest i modify plz?

Also, there is no require(../artifacts or artifacts.require in my code

[baocongchen]

You can console.log the arguments vrfCoordinatorV2Address, entranceFee, gasLane, subscriptionId, callbackGasLimit, interval and check if they have the correct values and types. I think that's where the issue happens.

[DorianDaSilva]

1. values & types in the constructor are identical to repo.
2. Console.log doesn't run bcz I get the error before it has a chance to get to the arguments

[shaunsaker]

@DorianDaSilva What does your network config look like?

[DorianDaSilva]

@shaunsaker Below helper-hardhat-config.js+ hardhat-config.js

[shaunsaker]

Thanks. At first glance your network config looks okay. Do you mind posting a link to your repo so that we can debug this locally?

[DorianDaSilva]

@shaunsaker I am currently going through the entire lesson again to try to pinpoint issue. I will upload repo once its done.

I am running into trouble rtying to create a new upkeep on chainlink page as described in this issue: #734

Maybe that's the reason I am unable to pull the contract, what do you think?

[DorianDaSilva]

@shaunsaker Repeated the entire lesson and still ended up with the same problem. It is starting to drive me a little crazy tbh.

Error: ERROR processing /home/hh-fcc/hardhat-smartcontract-lottery-fcc/deploy/01-deploy-raffle.js:
Error: invalid contract address or ENS name (argument="addressOrName", value=undefined, code=INVALID_ARGUMENT, version=contracts/5.6.2)

=================================================================================

Below the link to the Bug Repo to replicate error & debug locally if anyone is up for it.
| https://github.com/DorianDaSilva/BugFix

=================================================================================

The issue seems to be with Raffle.sol since it compiles properly but is not deploying. I also tried to use the code from the course repo in VsCode & remix but got the same error when running it with the rest of the files or as a standalone.

I don't understand what's wrong with it. @PatrickAlphaC Do you have any suggestions to fix this please, been stuck on this for 4 days now when no one else seems to be having this issue which is a bit strange imo. Thank you!

[shaunsaker]

Hey @DorianDaSilva! In your 01-deploy-raffle.js:18 you are using ethers.getContractAt whereas you should be using ethers.getContract.

The reason it throws an error with "invalid contract address or ENS name" is that getContractAt expects an address as the second argument.

[DorianDaSilva]

Hi @shaunsaker, thank you so much for the input! I attempted to change the method to getContract previously as seen below:

  if (developmentChains.includes(network.name)) {

    const VRFCoordinatorV2Mock = await ethers.getContract("VRFCoordinatorV2Mock");

=================================================================================

| However, when trying to run it using ("VRFCoordinatorV2Mock") as a string argument, the code runs the if statement but then the terminal returns the following error:

Error: expected 0 constructor arguments, got 6

| The code breaks when it gets to const Raffle as seen below

  const raffle = await deploy("Raffle", {
    from: deployer,
    args: args,
    log: true,
    waitConfirmations: network.config.blockConfirmations || 1,
  });

================================================================================

I attempted the following:

1. Making args an empty array args: args[ ] => returns a syntax error

2. Making args into an array args: args[5] which returned Error: expected 0 constructor arguments, got 2

3. Removing :args to read only args which returns the same error Error: expected 0 constructor arguments, got 6

Not sure how to proceed from here. Any suggestions?

[shaunsaker]

@DorianDaSilva No worries. console.log really is your best friend ;) With a few logs here and there, you'll notice that the error comes from the Raffle contract deployment (there's also a clue in the error message that 6 args were passed => we pass 6 args to the Raffle contract deploy function).

I had a look at your Raffle.sol and after removing abstract, the compiler told me that it was missing the checkUpkeep function of the KeeperCompatibleInterface. To fix that you can simply rename your checkUpKeep function to checkUpkeep 🙂

[DorianDaSilva]

@shaunsaker It worked!
You're the man, thank you so much for your help. Couldn't have done it without you! 🙂

[shaunsaker]

@DorianDaSilva No worries mate, glad to help! Happy coding 🙂

[mshahzadmalik1995]

I am also facing the same issue. But not find any solution.