shortMessage: 'insufficient funds for intrinsic transaction cost'. What could be the problem?

[EddiePumpin]

const { ethers, JsonRpcProvider } = require("ethers");
const fs = require("fs-extra");
require("dotenv").config();

async function main() {
const provider = new JsonRpcProvider(process.env.RPC_URL);
const encryptedJson = fs.readFileSync("./.encryptedKey.json", "utf8");
  let wallet = ethers.Wallet.fromEncryptedJsonSync(
encryptedJson,
    process.env.PRIVATE_KEY_PASSWORD
  );
  wallet = await wallet.connect(provider);

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

  const contractFactory = new ethers.ContractFactory(abi, binary, wallet);
console.log("Deploying, please wait...");
const contract = await contractFactory.deploy();
 await contract.deploymentTransaction().wait(1);
const currentFavouriteNumber = await contract.retrieve();
 console.log(`Current Favourite Number: ${currentFavouriteNumber.toString()}`); 
  const transactionResponse = await contract.store("7");
const transactionReceipt = await transactionResponse.wait(1);
  const updatedFavouriteNumber = await contract.retrieve();
  console.log(`Updated favourite number is: ${updatedFavouriteNumber}`);
}
main() 
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });