import {ethers} from "ethers"// ts ES6

const Mainnet_RPC = 'https://eth-mainnet.g.alchemy.com/v2/Sp3-m00XFKs2Bs7LC8MyGn4Cx94CpIwl';
const Sophie_RPC = 'https://eth-sepolia.g.alchemy.com/v2/3uvxjzVO19PqwZSiiprJ7nCa2vm0zDlc';

const provider = new ethers.providers.JsonRpcProvider(Mainnet_RPC);
const Testprovider = new ethers.providers.JsonRpcProvider(Sophie_RPC);


const main = async () => {
    const balance = await provider.getBalance(`ethers.eth`);
    console.log(`ETH Balance of vitalik: ${ethers.utils.formatEther(balance)} ETH`);
    const blockNumber = await provider.getBlockNumber();
    console.log(`now the blockchain high is :`, blockNumber)
// ethers.utils.parseEther("1.0") { BigNumber: "1000000000000000000" }
}
main()

Error: invalid response - 0
    at request.onreadystatechange (d:\设计网页\node_modules\ethers\utils\web.js:84:29)
    at exports.XMLHttpRequest.dispatchEvent (d:\设计网页\node_modules\xmlhttprequest\lib\XMLHttpRequest.js:591:25)
    at setState (d:\设计网页\node_modules\xmlhttprequest\lib\XMLHttpRequest.js:610:14)
    at exports.XMLHttpRequest.handleError (d:\设计网页\node_modules\xmlhttprequest\lib\XMLHttpRequest.js:532:5)
    at ClientRequest.errorHandler (d:\设计网页\node_modules\xmlhttprequest\lib\XMLHttpRequest.js:459:14)
    at ClientRequest.emit (node:events:517:28)
    at TLSSocket.socketErrorListener (node:_http_client:501:9)
    at TLSSocket.emit (node:events:517:28)
    at emitErrorNT (node:internal/streams/destroy:151:8)
    at emitErrorCloseNT (node:internal/streams/destroy:116:3) {
  statusCode: 0,
  responseText: 'Error: read ECONNRESET\n' +
    '    at TLSWrap.onStreamRead (node:internal/stream_base_commons:217:20)'
}

Node.js v18.18.1