Lesson 5 : Ether.js - could not launch deploy.js

[wilonweb]

Hello
I'm on the Lesson - 5 : Ether.js at 07:07:40 from the video
I run ganache. ( one times with server : All Intefaces and with WSL )
I change the private key when i change the hostName but i have always the same error.

when i launch node deploy.js , i get an error.

reason: 'could not detect network',
  code: 'NETWORK_ERROR',
  event: 'noNetwork' 

this is the code of deploy.js

const ethers = require("ethers");
const fs = require("fs");

async function main() {
  // compile
  // http://127.0.0.1:7545
  const provider = new ethers.providers.JsonRpcProvider(
    "http://127.0.0.1:7545"
  );
  const wallet = new ethers.Wallet(
    "07ec347b7b6f5d70f96210fe82f1169f97492c05a26174d2ebe2a2faceb03933",
    provider
  );
  const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8");
  const binary = fs.readFileSync(
    "./SimpleStorage_sol_SimpleStorage.bin",
    "utf-8"
  );
  const contractFactory = new ethers.ContractFactory(abi, binary, wallet);
  console.log("Deploying, please wait....");
  const contract = await contractFactory.deploy(); // STOP here! Wait for contract to deploy!
  console.log(contract);
}

main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

And this is the console output

Deploying, please wait....
Error: could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.6.8)
    at Logger.makeError (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/logger/lib/index.js:233:21)
    at Logger.throwError (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/logger/lib/index.js:242:20)
    at JsonRpcProvider.<anonymous> (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/providers/lib/json-rpc-provider.js:561:54)
    at step (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/providers/lib/json-rpc-provider.js:48:23)
    at Object.throw (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/providers/lib/json-rpc-provider.js:29:53)
    at rejected (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/providers/lib/json-rpc-provider.js:21:65)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5) {
  reason: 'could not detect network',
  code: 'NETWORK_ERROR',
  event:

[alwayscommit]

In my case, and it should be similar in your case as well while using Ganache with WSL, the network address usually changes from the localhost address i.e "http://127.0.0.1:7545" to something else like "HTTP://172.23.48.1:7545"

[wilonweb]

Well seen thanks for your answer.

[PatrickAlphaC]

Also this: https://github.com/smartcontractkit/full-blockchain-solidity-course-js/blob/main/chronological-updates.md#windows-wsl--ganache

[benjbright]

I was also stuck on this error, this solution to change the server hostname and network address worked perfectly so thank you!

[LordReya]

I wouldn't even touch ganache in general. It's time-consuming to set up + it will be irrelevant for the next sections. Many others here seem to run into the same errors with ganache, so it's no common error. From someone who tried everything with the same WSL setup: Don't waist your time and move on to hardhat, however, I would still learn the basics from this section, since they kind of correlate to the later sections. Start running tests when you arrive in the hardhat section. Ganache is just crap.

[fonsecabc]

Well, Im in that session now, with the same error, thanks for the tip!

[ManuWeb3]

Same error. I've gone through the discussions here and still getting the issue.
Thanks for the tip to move on and work it out with Hardhat.
I'm on it.