Error: cannot estimate gas; transaction may fail or may require manual gas limit

.js

const hre = require("hardhat");

const BATON_CONTRACT_ADDR = "YOUR_BATON_CONTRACT_ADDRESSS";

async function main() {
  const Batons = await hre.ethers.getContractFactory("Batons");
  const batons = await Batons.attach(BATON_CONTRACT_ADDR);
  console.log("Connected to batons at :", BATON_CONTRACT_ADDR);

  // Calling read functions consecutively is fine.
  await batons.getBatonDonation(3);
  await batons.getEvolutionLevel(3);

  // Calling WRITE functions consecutively without tx.wait() is NOT okay. You may
  // see "Error: cannot estimate gas; transaction may fail or may require
  // manual gas limit".
  if (await batons.saleState() != 0) {
    await batons.stopSale();
  }
  await batons.startPresale();
  await batons.startSale();

  // You should add tx.wait() after every write function call. Note that you
  // need to wait the wait() call, i.e., `await tx.wait();`.
  let tx;
  if (await batons.saleState() != 0) {
    tx = await batons.stopSale();
    await tx.wait();
  }
  tx = await batons.startPresale();
  await tx.wait();
  tx = await batons.startSale();
  await tx.wait();
}

// We recommend this pattern to be able to use async/await everywhere
// and properly handle errors.
main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });