Truffle Deployment – Fixing Gas Limit Errors When Deploying Contracts to Rinkeby

contract-deploymentrinkebytruffletruffle-contracttruffle-deployment

I am trying to Deploy a beginners contract onto the rinkeby test network through Infura node. It is throwing the following error. 

(node:35183) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: The contract code couldn't be stored, please check your gas limit.
(node:35183) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Contract

    pragma solidity ^0.4.17;

    contract Inbox {
        string public message;

        function Inbox(

string initialMessage) public {
        message = initialMessage;
    }

    function setMessage(string newMessage) public {
        message = newMessage;
    } }

I used some console logs to determine where the error is being thrown, I have marked it below with a //COMMENT.

Deploy script

const HDWalletProvider = require('truffle-hdwallet-provider');
const Web3 = require('web3');
const { interface, bytecode } = require('./compile');

const provider = new HDWalletProvider(
    'word frog gentle happy chicken book sneeze provide stick handle four fan',
      'https://rinkeby.infura.io/myStringOfRandomLetters'
);
const web3 = new Web3(provider);

const deploy = async () => {
    const accounts = await web3.eth.getAccounts();

    console.log('Attempting to Deploy from account', accounts[0]);

//ERROR OCCURS HERE
    const result = await new web3.eth.Contract(JSON.parse(interface))
        .deploy({ data: bytecode, arguments: ['Hi there!'] })
        .send({ gas: '1000000', from: accounts[0] });

    console.log('Contract deployed to', result.options.address);
};
deploy();

Things I have tried to fix it:

Increasing the gas limit to 2,000,000, 4,000,000 and decreasing to around 500,000 and 21,000. I hit a "too small amount of gas" error, so I know gas amount is not the issue.

It may have been the npm module "truffle-hdwallet-provider" not installing properly, so I uninstalled, then sudo installed, then found the error fix on the internet (add –unsafe-perm to the commmand). like below

$ sudo npm install truffle-hdwallet-provider --unsafe-perm

still same error. I noticed another identical question Here however (as of now)it is also unanswered.

Best Answer

I added '0x' + in front of the bytecode in the .deploy to make it Work.

.deploy({ data: '0x' + bytecode, arguments: ['Hi there!'] })

If there's no '0x' the bytecode will convert the whole string to hexadecimal, which will be double the size and throw the gas error.

I also re-installed truffle wallet provider using

$ sudo uninstall truffle-hdwallet-provider

and then

$ sudo install --save truffle-hdwallet-provider when inside my project folder.

I also updated git by following this tutorial

This answer is inspired from the answer HERE

Related Topic