call revert exception error while working with hardhat and ether.js [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ]

[imtjmalik]

Hi,
I am having an error while working on hardhat and ether.js.
I am trying to deploy and interact with smart contract using hardhat and ether.js. my contract is very basic with 2 functions .

I am successfully able to deploy my smart contract on live testnet with infura. After this I am tying to interact with my smart contract using node console

npx hardhat console

const Lock=await ethers.getContractFactory("contractA");

const lock=await Lock.attach("contract address");

after attachment to my contract I am succesfully able to interact and perform store function using

await lock,store(4);

and it successfully run and give me the result.

but the problem comes with the call functions only whenever I am trying to call my functions such as retrieve in this case it always throw an error such as below

Error: call revert exception [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ]

I have attached complete code files and error details below

also i have tried to resolve many times and gone through all the things multiple times and unable to crack

please help me to resolve this issue and give your feedback on it

contractA.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;


contract contractA{
    uint public mydemocontract=5;

    function store(uint _num) public{
        mydemocontract=_num;
    }

    function retrieve() public view returns (uint256){
        return mydemocontract;
    }
}

I am using infura rinkeby testnet to deploy and interact on live testnet using metamask wallet

my deploy.js file is as :

const hre = require("hardhat");
async function main() {

  const Lock = await hre.ethers.getContractFactory("contractA");
  const lock = await Lock.deploy();

  await lock.deployed();
  console.log("ContractA is deployed to:", lock.address);
}
main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

my hardhat-config.js file is ;

require("@nomicfoundation/hardhat-toolbox");

/// I have typed hidden for safety in place of private key here///

const RINKEBY_PRIVATE_KEY = "Hidden private key";

module.exports = {
  solidity: "0.8.9",
  networks: {
    rinkeby: {
      url: `https://rinkeby.infura.io/v3/c93753c96a864287b5bf3375b312ec49`,
      accounts: ["hidden private key"],  
      gasMultiplyer: 1,
      gas: 2100000,
      gasPrice: 8000000000,
       timeout: 20000,
      //  saveDeployments,
       chainId:4,
    }
  }
};

the error shows whenever I am trying to call functions such as in this case retrieve function

my code ;

await lock.retrieve();

and error throws is** :

Uncaught: Error: call revert exception [ See: https://links.ethers.org/v5-errors-CALL_EXCEPTION ]** (method="retrieve()", data="0x", errorArgs=null, errorName=null, 
errorSignature=null, reason=null, code=CALL_EXCEPTION, version=abi/5.6.4)
    at step (C:\Users\Talha Javaid\Desktop\Live Nwtwork Deployment Hardhat\hardhat-tutorial-live\node_modules\@ethersproject\contracts\lib\index.js:48:23)
    at Contract.<anonymous> (C:\Users\Talha Javaid\Desktop\Live Nwtwork Deployment Hardhat\hardhat-tutorial-live\node_modules\@ethersproject\contracts\src.ts\index.ts:400:44)
    at Interface.decodeFunctionResult (C:\Users\Talha Javaid\Desktop\Live Nwtwork Deployment Hardhat\hardhat-tutorial-live\node_modules\@ethersproject\abi\src.ts\interface.ts:427:23)
    at Logger.throwError (C:\Users\Talha Javaid\Desktop\Live Nwtwork Deployment Hardhat\hardhat-tutorial-live\node_modules\@ethersproject\logger\src.ts\index.ts:273:20)
    at Logger.makeError (C:\Users\Talha Javaid\Desktop\Live Nwtwork Deployment Hardhat\hardhat-tutorial-live\node_modules\@ethersproject\logger\src.ts\index.ts:261:28) {
  reason: null,

Kindly help me out:
Thanks.

[eerjuano]

Have you solved this issue? I have the same problem and i don't find any solution.

[imtjmalik]

Yes it worked, actually the issue was mainly due to node versions, I would recommend you to follow the instructions step by step as in the link attached, it would fix the error, also make sure to use node version above 16. Regards

…

On Tue, 9 Aug 2022, 21:42 eerjuano, ***@***.***> wrote: Have you solved this issue? I have the same problem and i don't find any solution. — Reply to this email directly, view it on GitHub <#1058 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AYLZZ6ZZF5F356WZ5UHNO33VYKDBBANCNFSM53ZZ2LQQ> . You are receiving this because you authored the thread.Message ID: <smartcontractkit/full-blockchain-solidity-course-js/repo-discussions/1058/comments/3359693 @github.com>

[eerjuano]

ok thanks