Troubleshooting Solidity contract deployment on Node.js with Hardhat and Infura
I'm optimizing some code but Could someone explain Currently developing a decentralized application where I need to deploy a Solidity smart contract using Hardhat and connect to the Ethereum network via Infura..... During my attempts to deploy, I'm hitting this error: ``` Error: Provider Error: The JSON RPC response was not understood: {"jsonrpc":"2.0","id":1,"error":{"code":-32000,"message":"invalid sender"}} ``` This happens right after I call the deploy function in my script: ```javascript async function main() { const ContractFactory = await ethers.getContractFactory('MyContract'); const contract = await ContractFactory.deploy(); await contract.deployed(); console.log(`Contract deployed to: ${contract.address}`); } main().catch((error) => { console.error(error); process.exitCode = 1; }); ``` I've double-checked my wallet's private key and ensured that it's being loaded correctly using `dotenv` for environment variables. Here’s how I’m setting it up in my `.env` file: ```plaintext INFURA_PROJECT_ID=your_project_id PRIVATE_KEY=your_private_key ``` In my `hardhat.config.js`, I'm using the following configuration: ```javascript require('@nomiclabs/hardhat-waffle'); require('dotenv').config(); module.exports = { solidity: "0.8.0", networks: { ropsten: { url: `https://ropsten.infura.io/v3/${process.env.INFURA_PROJECT_ID}`, accounts: [`0x${process.env.PRIVATE_KEY}`] } } }; ``` It seems that the error indicates the sender is not recognized, which could potentially mean the private key is incorrect or the wallet doesn’t have enough funds for gas. I have checked the wallet balance on Etherscan, and it shows sufficient ETH. I also tried deploying on the local Hardhat network, which worked fine, but I'm unsure about the configuration when moving to a testnet. Can anyone provide insight on what might be wrong? A link to some relevant documentation or examples would also be appreciated. I'm using Javascript latest in this project. Any ideas what could be causing this? I'm coming from a different tech stack and learning Javascript. Any suggestions would be helpful.