failed to get chainId , while deploying to sepolia lesson 7

[Sanyam2103]

here is my hardhat.config and .env
i am not able to deploy on local testnet like sepolia it says that "failed to get chainid ,falling back on netversion"

require("@nomicfoundation/hardhat-toolbox")
require("@nomiclabs/hardhat-solhint")
require("hardhat-deploy")
require("hardhat-gas-reporter")

const COINMARKETCAP_API_KEY = process.env.COINMARKETCAP_API_KEY || ""
const ALCHEMY_API_KEY = process.env.ALCHEMY_API_KEY
const SEPOLIA_RPC_URL =
	process.env.SEPOLIA_RPC_URL ||
	`https://eth-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY}`
const PRIVATE_KEY =
	"" ||
	process.env.PRIVATE_KEY
const ETHERSCAN_API_KEY = process.env.ETHERSCAN_API_KEY || ""

module.exports = {
	defaultNetwork: "hardhat",
	networks: {
		hardhat: {
			chainId: 31337,
			// gasPrice: 130000000000,
		},
		sepolia: {
			url: SEPOLIA_RPC_URL,
			accounts: [PRIVATE_KEY],
			chainId: 11155111,
			blockConfirmations: 6,
			gas: 2100000,
			gasPrice: 8000000000,
			saveDeployments: true,
		},
	},
	solidity: {
		compilers: [
			{
				version: "0.8.18",
			},
			{
				version: "0.6.6",
			},
		],
	},
	etherscan: {
		apiKey: ETHERSCAN_API_KEY,
		// customChains: [], // uncomment this line if you are getting a TypeError: customChains is not iterable
	},
	alchemy: {
		apiKey: ALCHEMY_API_KEY,
	},
	gasReporter: {
		enabled: true,
		currency: "USD",
		outputFile: "gas-report.txt",
		noColors: true,
		// coinmarketcap: COINMARKETCAP_API_KEY,
	},
	namedAccounts: {
		deployer: {
			default: 0, // here this will by default take the first account as deployer
			1: 0, // similarly on mainnet it will take the first account as deployer. Note though that depending on how hardhat network are configured, the account 0 on one network can be different than on another
		},
	},
	mocha: {
		timeout: 500000,
	},
}

SEPOLIA_RPC_URL=https://eth-sepolia.g.alchemy.com/v2/qjcG7K_f7FUqluvSCDzI6JybGWwNeb56
COINMARKETCAP_API_KEY=asdfasdfasdfasdfasdfasdfasdf
ETHERSCAN_API_KEY=asdfasdfasdfs
GOERLI_RPC_URL=https://rpc.ankr.com/eth_goerli
ALCHEMY_API_KEY=qjcG7K_f7FUqluvSCDzI6JybGWwNeb56

[alymurtazamemon]

@Sanyam2103 It looks like you do not have install dotenv package or configure it in hardhat.config.js file. Due to that, the hardhat.config.js file not able to read the env variables.

[Sanyam2103]

how to solve this conflict of dependencies while installing dotenv package

[alymurtazamemon]

@Sanyam2103 use force flag togather. npm install --save-dev dotenv --force