The folder structure in your github repository doesn't align with with the copy/paste noted in the book (i.e., chapter 9 does not contain the required UI code for 'Greeter'...

EDIT: spelling. I solved my problem so am less mad but still, the fact that I had to scramble around for this UI code was VERY frustrating...

Hello I have been trying to deploy my contract to the goerli test network but i get this error.

Migrations dry-run (simulation)

Network name: 'goerli-fork'
Network id: 5
Block gas limit: 8000000 (0x7a1200)

1_initial_migration.js

Replacing 'Migrations'

Error: *** Deployment Failed ***

"Migrations" could not deploy due to insufficient funds

• Account: 0x23D4441385418144Eb3F75Caa9F5d043a1A74BDC
• Balance: 0 wei
• Message: insufficient funds for gas * price + value
• Try:
  • Using an adequately funded account
  • If you are using a local Geth node, verify that your node is synced.

If you check my wallet address on the goerli test network you will see i have sufficient ETHER.
Thank you

I bought the book, "Hands-On Smart Contract Development with Solidity and Ethereum" in Japanese Edition.

I run the first truffle test command in chapter4 in hoscdev/chapter-4/greeter path.

const GreeterContract = artifacts.require("Greeter");

contract("Greeter", () => {
    it("has been deployed successfully", async () => {
        const greeter = await GreeterContract.deployed();
        assert(greeter, "contract failed to deploy");
    });
});

The book says the result is "Could not find artifacts got Greeter grom any sources".
However, the commands stop forever.

Help me.

test-solidity(master*) » truffle test

Compiling your contracts...
===========================
> Compiling ./contracts/Greeter.sol
> Compiling ./contracts/Migrations.sol
> Artifacts written to /var/folders/nv/d2vh2f4j2jv32rxxwsqfllpc0000gn/T/test-2021717-69448-160y8cv.3w5p
> Compiled successfully using:
   - solc: 0.5.16+commit.9c3226ce.Emscripten.clang

Error: Provided address "Greeter" is invalid, the capitalization checksum test failed, or its an indrect IBAN address which can't be converted.

Code

// Greeter.sol
pragma solidity >=0.4.0 <0.9.0;

contract Greeter {}

// greeter_test.js
const GreeterContract = artifacts.require("Greeter")

GreeterContract("Greeter", () => {
  it("has been deployed successfully", async () => {
    const greeter = await GreeterContract.deployed()
    RTCIdentityAssertion(greeter, "contract was not deployed")
  })
})

// 2_deploy_greeter.js
const GreeterContract = artifacts.require("Greeter")

module.exports = function (deployer) {
  deployer.deploy(GreeterContract)
}

We updated the chapters and need to move Chapter 7 as is on master, to Chapter 9

In the latest version of openzeppelin, this has been moved.

Install
npm install @openzeppelin/contracts --save

Instead of

import "openzeppelin-solidity/contracts/ownership/Ownable.sol";

use it like this

import "@openzeppelin/contracts/access/Ownable.sol";

I know there is an older issue regarding Chapter 7 (still open and demonstrating the same error that I was having).

I discovered first that web3 needed to be updated to 1.2.2 (works around a v8 and node-gyp error), but the alert is still appearing about failing to connect. The specific error is that callbackify is missing.

I used the chapter10+11 project as described in the book. Sidenote: it appears that project is based on yarn - should the instructions be to use yarn instead of npm? I am getting several warnings about the mix.

Hi,

I got error on Chapter 5.

I executed npm run start after truffle migrate --network development.
and access to http://localhost:3000

How to set an address?

In Chapter 5, I keep getting this error when "Deploying to Ganache" when I run the command "$ npm run start". Which file do I go to to fix this?

While reading Hands-On Smart Contract Development with Solidity and Ethereum, during chapter 5 the reader is asked to clone this repo. Then cp -r hoscdev/chapter-9/client greeter/client the client folder appears to be missing in this repo.

Using the client folder from chapter-10 to move forward.

I have done reading and following the chapter 7 of the book "Hands-On Smart Contract Development with Solidity and Ethereum".
And there said that i could create the new fundraiser from browser, but when i am try, it display error like this :

please tell me how to solve this problem.

In chapter 5, there's this following instruction:

cp -r hoscdev/chapter-9/client greeter/client

Currently the folder client doesn't exist in the repo.

Tagging @ksolo . I am able to get most of the steps to work in ch9 but get an error on run start. Here are the steps I take:

1. clean directory: /greeter-dapp; truffle unbox react; success!
2. truffle develop; compile; migrate; success!
3. open other terminal; cd ~/test/client/src; npm i; dependencies install successfully (one warning, no errors)
4. cd up to /client; attempt npm run start; failure :( with the below:
   

Any idea how I can fix this?

@bunmin closed his issue but never received a response from anyone (nor posted if he resolved himself). Could someone please respond and assist with the error?

Hello after deployment to the development network, I do not see the expected string response and the input box is unresponsive,
Here is a link to the Github repository of my code https://github.com/henrytirla/Hands-on-smart-contract-development-with-solidity.git. Any help to understand why this doesn't work will be very much appreciated.

Best regards

where can i get this value mnemonic environment variable ?

I'm still learning and I don't know what it is and how can I get the contents of this variable, please help

At the beginning of chapter 5 I try to compile previously added code in chapter 4 and receive the following output:

Here's my Greeter.sol code:
`pragma solidity ^0.8.0;

import "@openzeppelin/contracts/access/Ownable.sol";

contract Greeter is Ownable {
string private _greeting = "Hello, World!";
address private _owner;

constructor() {
    _owner = msg.sender;
}

modifier onlyOwner() {
    require(
        msg.sender == _owner,
        "Ownable: caller is not the owner!"
    );
    _;
}

function greet() external view returns(string memory) {
    return _greeting;
}

function setGreeting(string calldata greeting) external {
    _greeting = greeting;
}

function owner() public view returns(address) {
return _owner;
}

} `

When navigating to the New Fundraiser page, the init function defined in the useEffect hook does not appear to fire. Reloading the page will cause the function to run and properly set the required variables.

cc/ @randallkanna