Contract deployed at undefined

[MustafaMansoor]

Discussed in #6710

^{Originally posted by MustafaMansoor August 10, 2024}
Hi,
In the tutorial, the deployment was done on Rinkeby, but since it was deprecated, I decided to deploy on the Sepolia testnet. I added my API key from MetaMask and selected the Sepolia network in Alchemy. However, I'm encountering an issue where the contract address shows as undefined after deployment. The transaction amount is being deducted from my MetaMask, so I believe the contract is being deployed, but I can't figure out what's causing the issue. Any help would be appreciated.

here is the code

const ethers = require("ethers");
const fs = require("fs-extra");
require("dotenv").config();

const main = async () => {
  const provider = new ethers.JsonRpcProvider(process.env.URL);

  const wallet = new ethers.Wallet(process.env.PRIVATE_KEY, provider);

  const abi = fs.readFileSync("./simpleStorage_sol_SimpleStorage.abi", "utf8");
  const binary = fs.readFileSync(
    "./simpleStorage_sol_SimpleStorage.bin",
    "utf8"
  );

  const contractFac = new ethers.ContractFactory(abi, binary, wallet);
  console.log("Deploying contract, please wait...");

  const contract = await contractFac.deploy();

  // Wait for the contract deployment to be mined
  await contract.waitForDeployment("1");

  // Now the address should be available
  console.log(`Contract deployed at ${contract.address}`);

  // Retrieve the initial value stored in the contract
  // const res = await contract.retrieve();
  // console.log("Initial retrieved value:", res.toString());

  // // Store a new value
  // const TransRes = await contract.store("1217");
  // await TransRes.wait(); // Wait for 1 confirmation
  // console.log("New value stored.");

  // // Retrieve the updated value
  // const update = await contract.retrieve();
  // console.log("Updated retrieved value:", update.toString());
};

main()
  .catch(console.error)
  .then(() => process.exit(0));

and here is the error

Deploying contract, please wait...
Contract deployed at undefined

[ishagarg1809]

I think the contract object has been changed recently, you can find the contract address at target.
Update your code from

  console.log(`Contract deployed at ${contract.address}`);

to

console.log(`Contract deployed at ${contract.target}`);