Ethereum futures backwardation hints at 30% 'airdrop rally' ahead of the Merge

I’m trying to auto update my front-end repo with the contract address, but I keep getting TypeError: Cannot read properties ‘toString’), I tried removing the toString and it prompted me to convert toString, I imported network from hardhat so im not sure what’s wrong.

const { ethers, network } = require("hardhat"); const fs = require("fs"); async function updateContractAddress() {     const chainId = network.config.chainId.toString();     const nftMarketPlace = await ethers.getContract("BullChordMarket");     const contractAddresses = JSON.parse(         fs.readFileSync(frontEndContractsFile, "utf8")     );     if (chainId in contractAddresses) {         if (             !contractAddresses[chainId]["BullChordMarket"].includes(                 nftMarketPlace.address             )         ) {             contractAddresses[chainId]["BullChordMarket"].push(                 nftMarketPlace.address             );         }     } else {         contractAddresses[chainId] = {             BullChordMarket: [nftMarketPlace.address],         };     }      fs.writeFileSync(frontEndContractsFile, JSON.stringify(contractAddresses)); }