TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')

[hriztam]

I'm not able to deploy my contract, can someone look at the code and tell what's wrong?

const { ethers } = require("ethers")
const fs = require("fs-extra")

async function main() {
    // code
    // http://127.0.0.1:7545
    const provider = new ethers.providers.JsonRpcProvider("http://127.0.0.1:7545")
)

[koniq]

Hi,

I also had issue at the beginnging when working with Ganache installed on Windows OS and running script from WSL you can go to Ganache->Settings -> Server and choose WSL in hostname part, then use given URI in script.
Let me know if it helped.

[hriztam]

Actually I'm on MacOS

[koniq]

Still I would try it

[ShawnFromTexas]

i tried this and also "all versions" but still same error. :(

any other ideas fren?

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

async function main() {
  // http://127.0.0.1:7545
  // Ganache End-Point ABOVE
  const provider = new ethers.providers.JsonRpcProvider("HTTP://0.0.0.0:7545");
  const wallet = new ethers.Wallet(
    "0x2f722579a5ca33e004be78ac01cfa6c4a255d3ee706dad692d1147095fa566ba",
    provider
  );
  const abi = fs.readSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8");
  const binary = fs.readFileSync(
    "./SimpleStorage_sol_SimpleStorage.bin",
    "utf8"
  );
  const contractFactory = new ethers.ContractFactory(abi, binary, wallet);
  console.log("Deploying, please wait...");
  const contract = await contractFactory.deploy();
  // using await because it means STOP HERE! Wait for contract to deploy
  console.log(contract);
}

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

[hriztam]

What worked for me:
https://ethereum.stackexchange.com/questions/144451/typeerror-cannot-read-properties-of-undefined-reading-jsonrpcprovider

[hriztam]

I downgraded my ethers version and now a different error is coming up

const { ethers } = require("ethers")
const fs = require("fs-extra")

async function main() {
    // code
    // http://127.0.0.1:7545
    const provider = new ethers.providers.JsonRpcProvider("http://127.0.0.1:7545")
    const wallet = new ethers.Wallet(
        "0xd31b3dce5b524b69eeb41033581c0d6f094587e19cec3cd121a67d1ee33dc423",
        provider
    );
    const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf-8")
    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();
    console.log(contract)
}

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

<ref *1> Error: cannot estimate gas; transaction may fail or may require manual gas limit 

[Mohit-Aasirwal]

facing the same issue :<(

[Kunal7069]

please review my code to deploy the smart contract:-

const ethers = require("ethers")
const solc = require("solc")
const fs = require("fs-extra")
require("dotenv").config()

async function main() {
// First, compile this!
// And make sure to have your ganache network up!
// The old way can be seen below:
// let provider = new ethers.providers.JsonRpcProvider("HTTP://127.0.0.1:7545")
// On ether 6 and above, you should use like this
let provider = new ethers.JsonRpcProvider("HTTP://0.0.0.0:7545")
// let provider = new ethers.providers.JsonRpcProvider(process.env.RPC_URL)
let wallet = new ethers.Wallet("0x55ab9e9bfbe30d87e1eadf177a6ddf0d3dc2905770f8704c1eb649c3c5027b51", provider)
// const encryptedJson = fs.readFileSync("./.encryptedKey.json", "utf8");
// let wallet = new ethers.Wallet.fromEncryptedJsonSync(
// encryptedJson,
// process.env.PRIVATE_KEY_PASSWORD
// );
// wallet = wallet.connect(provider);
const abi = fs.readFileSync("./SimpleStorage_sol_SimpleStorage.abi", "utf8")
const binary = fs.readFileSync(
"./SimpleStorage_sol_SimpleStorage.bin",
"utf8"
)
const contractFactory = new ethers.ContractFactory(abi, binary, wallet)
console.log("Deploying, please wait...")
const contract = await contractFactory.deploy()
// const contract = await contractFactory.deploy({ gasPrice: 100000000000 })
const deploymentReceipt = await contract.deployTransaction.wait(1)
console.log(Contract deployed to ${contract.address})
// console.log("Here is the transaction:")
// console.log(contract.deployTransaction)
// console.log("Here is the receipt:")
// console.log(deploymentReceipt)
// const nonce = await wallet.getTransactionCount()
// tx = {
// nonce: nonce,
// gasPrice: 100000000000,
// gasLimit: 1000000,
// to: null,
// value: 0,
// data: "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",
// chainId: 1337,

// Additionally, there is a v,r,and s variable that ethers handles for us.
// This is the signature of the transaction.
// There is a lot of math going on with those values, but that's how it's gaurenteed that the transaction is signed!
// https://ethereum.stackexchange.com/questions/15766/what-does-v-r-s-in-eth-gettransactionbyhash-mean


// }
// There is also a v, r, and s component of the transaction that Ethers will handle for us.
// It's these three components that make up the cryptographic signature.
// We won't go into this, because it's a lot of math.

// console.log("Let's deploy another! Please wait...")
// let resp = await wallet.signTransaction(tx)
// const sentTxResponse = await wallet.sendTransaction(tx);
// console.log(resp)

let currentFavoriteNumber = await contract.retrieve()
console.log(`Current Favorite Number: ${currentFavoriteNumber}`)
console.log("Updating favorite number...")
let transactionResponse = await contract.store(7)
let transactionReceipt = await transactionResponse.wait()
currentFavoriteNumber = await contract.retrieve()
console.log(`New Favorite Number: ${currentFavoriteNumber}`)

}

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

its giving this error-
JsonRpcProvider failed to detect network and cannot start up; retry in 1s (perhaps the URL is wrong or the node is not started)
Error: connect ECONNREFUSED 0.0.0.0:7545
at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1555:16) {
errno: -111,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '0.0.0.0',
port: 7545
}

[ansinitro]

In my case

I use the "WSL (UBUNTU) in my "VS Code", therfore to solve this problem.

I went to settings after => to server tab => and changed my hostname to ".... (WSL (Hyper-V firewall))