Lesson 5 : TypeError: Cannot read property 'toHexString' of undefined

[wilonweb]

Hello
I'm on 08.03.09 from the video tutorial.
And i don't know why when i launch node deploy.js i got
TypeError: Cannot read property 'toHexString' of undefined
et tout le code "console.log" present dans la fonction main ne s'affiche pas dans la console

This is deploy.js code

const ethers = require("ethers")
const fs = require("fs")
require("dotenv").config()

async function main() {
    // compile
    // http://127.0.0.1:7545
    let provider = new ethers.providers.JsonRpcProvider(process.env.RPC_URL)
    const encryptJson = fs.readFileSync("./encryptedKey.json", "utf-8")
    let wallet = new ethers.Wallet.fromEncryptedJsonSync(
        encryptJson,
        process.env.PRIVATE_KEY_PASSWORD
    )
    wallet = await wallet.connect(provider)
    // let wallet = new ethers.Wallet(process.env.PRIVATE_KEY, 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!
    const transactionReceipt = await contract.deployTransaction.wait(1)
    console.log(`Contact Adresse: ${contract.address}`)

    //   console.log("Let's deploy with only transaction data");
    //   const nonoce = await wallet.getTransactionCount();
    //   const tx = {
    //     nonce: noce,
    //     gasPrice: 20000000000,
    //     gasLimit: 100000,
    //     to: null,
    //     value: 0,
    //     data: "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",
    //     chainId: 5777,
    //   };
    //   const sentdTxResponse = await wallet.sendTransaction(tx);
    //   await sentdTxResponse.wait(1);
    //   console.log(sentdTxResponse);
    // }

    let currentFavoriteNumber = await contract.retrieve()
    console.log(currentFavoriteNumber.toString())
}

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

//console.log(process.env.PRIVATE_KEY)

And this is all the console output.

wilfried@DESKTOP-FQ2D16J:~/smartContract/JS/etherJS$ node deploy.js
TypeError: Cannot read property 'toHexString' of undefined
    at isHexable (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/bytes/lib/index.js:9:21)
    at arrayify (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/bytes/lib/index.js:69:9)
    at getPassword (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/utils.js:25:33)
    at _computeKdfKey (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/keystore.js:160:49)
    at decryptSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/keystore.js:210:15)
    at decryptJsonWalletSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/index.js:36:43)
    at new Wallet.fromEncryptedJsonSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/wallet/lib/index.js:229:68)
    at main (/home/wilfried/smartContract/JS/etherJS/deploy.js:10:18)
    at Object.<anonymous> (/home/wilfried/smartContract/JS/etherJS/deploy.js:47:1)
    at Module._compile (node:internal/modules/cjs/loader:1092:14)

[baocongchen]

I think you were trying to convert currentFavoriteNumber to string but your await contract.retrieve() returned an undefined.

[Rishi860]

contract.retrieve() will never return undefined as it gets initialized to 0.

[Rishi860]

Can you paste your Encryptedfile code here? used for creating wallet.
Everything else seems fine

[wilonweb]

Hello this is the encryptKey.js file

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

async function main() {
    const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)
    const encryptedJsonKey = await wallet.encrypt(
        process.env.PRIVATE_KEY_PASSWORD,
        process.env.PRIVATE_KEY
    )
    console.log(encryptedJsonKey)
    fs.writeFileSync("./encryptedKey.json", encryptedJsonKey)
}

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

[baocongchen]

Looks like

let wallet = new ethers.Wallet.fromEncryptedJsonSync(
        encryptJson,
        process.env.PRIVATE_KEY_PASSWORD
    )

is where the error happens.
@NinjaTurtles-cloud you may need to console.log those two parameters to see if their values are valid.

[wilonweb]

Hello

I did the console.log at the end of the async function main and i saw nothing in the console output.

    console.log(encryptJson)
    console.log(process.env.PRIVATE_KEY_PASSWORD)

I add a point here ./.encryptedKey.json between /.encrypted ... like the [code of deploy.js from the PatrickAlphaC github] (https://github.com/PatrickAlphaC/ethers-simple-storage-fcc/blob/main/deploy.js) ( line 11 in comment)

And now when i launch node deploy.js the output is :

Error: ENOENT: no such file or directory, open './.encryptedKey.json'
    at Object.openSync (node:fs:505:3)
    at Object.readFileSync (node:fs:401:35)
    at main (/home/wilfried/smartContract/JS/etherJS/deploy.js:9:28)
    at Object.<anonymous> (/home/wilfried/smartContract/JS/etherJS/deploy.js:47:1)
    at Module._compile (node:internal/modules/cjs/loader:1092:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1121:10)
    at Module.load (node:internal/modules/cjs/loader:972:32)
    at Function.Module._load (node:internal/modules/cjs/loader:813:14)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
    at node:internal/main/run_main_module:17:47 {
  errno: -2,
  syscall: 'open',
  code: 'ENOENT',
  path: './.encryptedKey.json'
}

With this code for deploy.js

const ethers = require("ethers")
const fs = require("fs")
require("dotenv").config()

async function main() {
    //console.log(encryptJson)
    // compile
    // http://127.0.0.1:7545
    let provider = new ethers.providers.JsonRpcProvider(process.env.RPC_URL)
    const encryptJson = fs.readFileSync("./.encryptedKey.json", "utf-8")
    let wallet = new ethers.Wallet.fromEncryptedJsonSync(
        encryptJson,
        process.env.PRIVATE_KEY_PASSWORD
    )
    wallet = await wallet.connect(provider)
    // let wallet = new ethers.Wallet(process.env.PRIVATE_KEY, 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!
    const transactionReceipt = await contract.deployTransaction.wait(1)
    console.log(`Contact Adresse: ${contract.address}`)

    //   console.log("Let's deploy with only transaction data");
    //   const nonoce = await wallet.getTransactionCount();
    //   const tx = {
    //     nonce: noce,
    //     gasPrice: 20000000000,
    //     gasLimit: 100000,
    //     to: null,
    //     value: 0,
    //     chainId: 5777,
    //   };
    //   const sentdTxResponse = await wallet.sendTransaction(tx);
    //   await sentdTxResponse.wait(1);
    //   console.log(sentdTxResponse);
    //}

    let currentFavoriteNumber = await contract.retrieve()
    console.log(currentFavoriteNumber.toString())

    console.log(encryptJson)
    console.log(process.env.PRIVATE_KEY_PASSWORD)
}

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

[alymurtazamemon]

@NinjaTurtles-cloud your encrypted file when you write is "./encryptedKey.json"

[alymurtazamemon]

@NinjaTurtles-cloud which command are you using for running it?

[wilonweb]

I used : node encryptKey.js and node deploy.js

[alymurtazamemon]

@NinjaTurtles-cloud No I am talking about when you run the command are you passing the password (with the same spelling) with the command?

[alymurtazamemon]

@NinjaTurtles-cloud You can view that at timestamp: 7:40:01

[wilonweb]

I put the information in the .env but if i put the command like the timestamp: 7:40:01 the command is :

RPC_URL=https://eth-rinkeby.alchemyapi.io/v2/E....My-HTTPS-FROM-ALCHEMY
PRIVATE_KEY=53MyPrivateKeyFromMetaMask node deploy.js

[dheinz-1]

I get the same error. it seems that it doesn't recognize the .env variables. ie. process.env.PRIVATE_KEY_PASSWORD. When i hover over mine it says undefined even when I add a path to the dotenv.config({path: "../.env"})

[alymurtazamemon]

@NinjaTurtles-cloud When you follow the secure way of storing keys method, then the env file does not need anymore for private key after that it is linked with a password that we pass during running the script command.

[wilonweb]

Yes, and if i delete the PRIVATE_KEY and the RPC_URL from the .env i got always the same error when i launch node deploy.js

And if i use the script from the PatrickAlpha GitHub when i launch deploy.js it works.

The error is :

TypeError: Cannot read property 'toHexString' of undefined
    at isHexable (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/bytes/lib/index.js:9:21)
    at arrayify (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/bytes/lib/index.js:69:9)
    at getPassword (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/utils.js:25:33)
    at _computeKdfKey (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/keystore.js:160:49)
    at decryptSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/keystore.js:210:15)
    at decryptJsonWalletSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/json-wallets/lib/index.js:36:43)
    at new Wallet.fromEncryptedJsonSync (/home/wilfried/smartContract/JS/etherJS/node_modules/@ethersproject/wallet/lib/index.js:229:68)
    at main (/home/wilfried/smartContract/JS/etherJS/deploy.js:11:18)
    at Object.<anonymous> (/home/wilfried/smartContract/JS/etherJS/deploy.js:51:1)