Lesson 9: Issue with: Error VM Exception while processing transaction: reverted with custom error 'InvalidConsumer()'

[Glow-in-the-dark]

Not sure how to debug/fix the "invalid Consumer()' Error

This portion of my raffle.test.js failed.

        it("doesn't allow entrance when raffle is calculating", async function () {
          await expect(raffle.enterRaffle({ value: raffleEntranceFee }));
          await network.provider.send("evm_increaseTime", [
            interval.toNumber() + 1,
          ]);
          await network.provider.send("evm_mine", []); // we use [] empty array cause we just want to mine 1 empty block
          // await network.provider.request({ method: "evm_mine", params: [] }); // same as above, but top one more succinct
          // Since we enterRaffle, and it should be "isOpen", "timePassed", "hasPlayer", "hasBalance" all true,
          // Then now we can PRETEND to be a chainlink keeper, to call performUpkeep().
          await raffle.performUpkeep([]); // we pass an empty [], because it's an empty calldata.
          // NOW, this should be in a "CALCULATING" state.
          await expect(
            raffle.enterRaffle({ value: raffleEntranceFee })
          ).to.be.revertedWith("Raffle__NotOpen");
        });

This is my repo if needed.
https://github.com/Glow-in-the-dark/Solidity-playground/tree/main/EtherJS_Hardhat/hardhat-smartcontract-lottery

[Nlferu]

Hello @Glow-in-the-dark

The problem is with your deploy script I believe.

  } else {
    // else if it is live Testnet's network instead,
    vrfCoordinatorV2Address = networkConfig[chainId]["vrfCoordinatorV2"];
    subscriptionId = networkConfig[chainId]["subscriptionId"]; // In this case, we hardcoded it because we use the website UIUX to get it, but we can automate it like above too.
  }

Here you are getting subscriptionId from your helper-hardhat-config and in your helper there is no such parameter try adding it as below:

31337: {
        name: "localhost",
        subscriptionId: "0",
    },

This should fix your problem, if not let me know

[Nlferu]

Additionally I think you are missing adding consumer in your deploy script:

await vrfCoordinatorV2Mock.addConsumer(subscriptionId, raffle.address)

Without this your subscriptionId will throw you invalidConsumer as it is not added to vrf list. You can additionally checkout my repo here for fully automated process for all networks.

[Glow-in-the-dark]

@Neftyr Yesss !!! that totally works. By the way, Just to understand your debugging process,

1. How did u figure out it was this issue that was missing this addConsumer.( i suppose it was the error at the .OnlyValidConsumer ?)
2. Also, how do i check what i need to add. I didn't add that because i thought also the variables for the "constructor" was needed initially.

[Nlferu]

I just know this topic very well as I was preparing vrf v1 and vrf v2 with full automation for 3 of my projects, so I know what is required step by step for this chainlink tool and once I saw error with Consumer in name i knew almost instantly it has to be either wrong subId or address not registered for vrf service. To understand it better i recommend you going thru chainlink documentation and write step by step list what needs to be done and in which order exactly. You can visit my repo, which i linked and there you can find something similar in deploy scripts. If you have any other questions feel free to ask but Im bad on explaining things and my thinking process haha :D I'm very glad it worked for you tho ;)

[Nlferu]

Actually you can find list in my vrf v2 for python edition here:

[Chukwuebuka1310]

I previously had this same error and I made all necessary correction, but along the line I experienced another. here is the error messsage:

(test\unit\Raffle.test.js:27:20)">

  Raffle
    constructor
      1) "before each" hook for "It initialized the raffle correctly"


  0 passing (893ms)
  1 failing

  1) Raffle
       "before each" hook for "It initialized the raffle correctly":
     Error: VM Exception while processing transaction: reverted with custom error 'InvalidSubscription()'
    at VRFCoordinatorV2Mock.onlySubOwner (@chainlink/contracts/src/v0.8/vrf/mocks/VRFCoordinatorV2Mock.sol:218)
    at VRFCoordinatorV2Mock.addConsumer (@chainlink/contracts/src/v0.8/vrf/mocks/VRFCoordinatorV2Mock.sol:230)
    at EdrProviderWrapper.request (node_modules\hardhat\src\internal\hardhat-network\provider\provider.ts:359:41)
    at HardhatEthersSigner.sendTransaction (node_modules\@nomicfoundation\hardhat-ethers\src\signers.ts:125:18)
    at send (node_modules\ethers\src.ts\contract\contract.ts:313:20)
    at Proxy.addConsumer (node_modules\ethers\src.ts\contract\contract.ts:352:16)
    at Context. (test\unit\Raffle.test.js:27:20)

I believe the error is from this session of the code,

beforeEach(async function () {
       deployer = (await getNamedAccounts()).deployer
    //    signer = await ethers.getSigner(deployer)
        await deployments.fixture(["all"])

        raffle = await ethers.getContractAt("Raffle", (await deployments.get("Raffle")).address, signer);
        vrfCoordinatorV2Mock = await ethers.getContractAt("VRFCoordinatorV2Mock", (await deployments.get("VRFCoordinatorV2Mock")).address, signer)

        raffleEntranceFee =  await raffle.getEntranceFee()
        interval = await raffle.getInterval()
        subscriptionId = await raffle.getSubscriptionId()


        // console.log(`Subscription ID:`, subscriptionId)
        // console.log("Contract Address:", vrfCoordinatorV2Mock.target)
        // console.log("Signer Address:", vrfCoordinatorV2Mock.runner)
        // console.log("ABI Functions:", vrfCoordinatorV2Mock.interface.fragments.map(f => f.name));
        
        await vrfCoordinatorV2Mock.addConsumer(subscriptionId, raffle.target);  //This line to be precise is where the error is from(my 
        bias)
    })

I know that chainlink has gone through alot of updates since the release of the video but i still used the V2 mock and not the V2plus. So please I would appreciate any help. Thanks.