Lesson 8: Error: Transaction reverted without a string and invalid block tags.

[MichaelGKing]

Hello,

I am having trouble running my code on the local hardhat node.

On both Patrick's cloned repo's and my own work I consistently get this error:
Error: Transaction reverted without a reason string

Also in my node terminal, even after resetting my Metamask I get this issue: (block number changes)
Received invalid block tag 4. Latest block number is 3

When cloning Patrick's repo I do everything the Readme says. Except this part, I'm unsure what it means:
Reserve the front end with yarn http-server, input an amount in the text box, and hit fund button after connecting

This is my index.js folder:

// in front-end js you cannot use require, must use import
import { ethers } from "./ethers-5.6.esm.min.js";
import { abi, contractAddress } from "./constants.js";

// Have to add onclick events in js file, due to it being imported as a module type in the HTML.
const connectButton = document.getElementById("connectButton");
const fundButton = document.getElementById("fundButton");
connectButton.onclick = connect;
fundButton.onclick = fund;

console.log(ethers);

async function connect() {
  if (typeof window.ethereum != "undefined") {
    await window.ethereum.request({ method: "eth_requestAccounts" });
    connectButton.innerHTML = "Connected!";
  } else {
    connectButton.innerHTML = "Please install metamask!";
  }
}

// fund function
async function fund() {
  const ethAmount = "0.5";
  console.log(`Funding with ${ethAmount}...`);
  if (typeof window.ethereum != "undefined") {
    // provider / connection to the blockchain
    // signer / wallet/ someone with some gas
    // contract that we are interacting with
    // ^ ABI & Address
    // Web3Provider objects takes that http end point and automatically sticks it in ethers for us.
    // It looks at our metamask and says I found the http endpoint inside their metamask, thats what we are going to use as our provider here.
    const provider = new ethers.providers.Web3Provider(window.ethereum);
    const signer = provider.getSigner();
    const contract = new ethers.Contract(contractAddress, abi, signer);
    const transactionResponse = await contract.fund({
      value: ethers.utils.parseEther(ethAmount),
    });
  }
}

Any help on the issue would be greatly appreciated.

[MichaelGKing]

When I run the node I get this as well:
Contract deployment: <UnrecognizedContract>

Whereas in Patrick's video his has FundMe

[MichaelGKing]

Ok so if I do "yarn hardhat deploy" first then it gets a fund me in the contract deployment but now I get this error in the node terminal:

  Contract call:       FundMe#<unrecognized-selector>
  From:                0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266
  To:                  0xe7f1725e7734ce288f8367e1bb143e90bb3f0512

  Error: Transaction reverted: function selector was not recognized and there's no fallback function```

[PatrickAlphaC]

Does the transaction go through?

[MichaelGKing]

I think it's all good, had a friend look at it and he was getting the same errors, but showed me how it was working fine.

Yes I believe the transaction is going through.

[ZahraaHawie]

Hello.. I got the same error ( eth_call
Contract call: FundMe#
From: 0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266
To: 0xe7f1725e7734ce288f8367e1bb143e90bb3f0512

Error: Transaction reverted: function selector was not recognized and there's no fallback function )

How do you know that the transaction goes through?

[ZahraaHawie]

@MichaelGKing

[MichaelGKing]

Hello,

I would recommend continuing with the course despite the error. Once you add the getBalance functionality it will allow you to check the balance after you make the transaction, then you can check if it went through or not.

I don't know of a way to check it otherwise.

[shashikant-burnwal]

Can you also check your FundMe.sol code and see if the receiver () and fallback() functions are defined there. If not, see if putting that removes the error.

[M1708]

Adding these functions helped me get rid of this error
"Error: Transaction reverted: function selector was not recognized and there's no fallback function )".
Thanks @shashikant-burnwal

[daalmana]

not quite sure if this will solve it but you have:
"if (typeOf window.ethereum != 4{ ethAmount }"
change to:
"if (typeOf window.ethereum !== 4{ ethAmount }"
(!== instead of !=)

[shoaibshebi]

@MichaelGKing @zahraha97

Hey I was getting the same issue
Solved by resetting the metamask

In advanced section , you can find the reddish button to reset:

And also change the chainId in your metamasks's localhost hardhat network,
chainId should be -> 31337, if it is only 1337

Good luck