TypeError: Cannot convert undefined or null to object when deploying to testnet

• I’ve asked for help in the Truffle Gitter before filing this issue.

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Issue

I keep getting an error when trying to run truffle migrate.

Steps to Reproduce

Create a project directory called my-project Ensure truffle is installed Type in “truffle init” in the terminal while in the my-project directory cd contracts git clone https://github.com/OpenZeppelin/openzeppelin-solidity.git Create a file called Example.sol Paste the following code into the Example.sol file.

pragma solidity ^0.5.0;
import "openzeppelin-solidity/contracts/token/ERC20/ERC20.sol";
import "openzeppelin-solidity/contracts/token/ERC20/ERC20Detailed.sol";
contract ExampleToken is ERC20, ERC20Detailed {
    uint private INITIAL_SUPPLY = 10000e18;
    constructor () public
        ERC20Detailed("ExampleToken", "EGT", 18)
    {
        _mint(msg.sender, INITIAL_SUPPLY);
    }
}

cd … # To get into the parent directory create a file called secrets.json and paste the following into it { “mnemonic”: “x x x x x x x x x x x x” } Ensure that the mnemonic matches the mnemonic from the local instance of geth.

npm init npm install --save web3 npm install --save truffle-hdwallet-provider modify truffle.js to match the following…

var secrets = require("./secrets.json");
var HDWalletProvider = require("truffle-hdwallet-provider");
var Web3 = require('web3'); // Set variable to the web3 module
var web3 = new Web3(Web3.givenProvider || "ws://localhost:8545");

module.exports = {
    // See <http://truffleframework.com/docs/advanced/configuration>
    // to customize your Truffle configuration!
    networks: {
        development: {
            host: "127.0.0.1",
            port: 8545,
            network_id: "*", // Match any network id
            gas: 10000000,
            gasLimit: 26000000000
        },
        ropsten: {
            provider: new HDWalletProvider(secrets.mnemonic, "https://ropsten.infura.io/"),
            network_id: "*",
            gas: 1000000,
            gasLimit: 67000000,
            gasPrice: 20000000000
        },
        // network_id: 3,
        // host: "localhost",
        // port:  8545,
        // gas:   2900000
        mainnet: {
            provider: new HDWalletProvider(secrets.mnemonic, "https://mainnet.infura.io/"),
            network_id: 1,
            gas: 1000000,
            gasLimit: 67000000
        }
    },
    compilers: {
        solc: {
            version: "0.5.2"
        }
    }
};

In 1_initial_migration.js file in migrations folder:

module.exports = function(deployer) {
};

In 2_deploy_contracts.js file remove all the code:

module.exports = function(deployer) {
};

type in truffle migrate --network ropsten into terminal

Expected Behavior

For no contracts to be deployed, but for no errors to be thrown either.

Actual Results

I get the following message in terminal: TypeError: Cannot convert undefined or null to object at Function.keys (<anonymous>) at supplier.load.then.solc (/usr/local/lib/node_modules/truffle/build/webpack:/packages/truffle-compile/index.js:184:1) at <anonymous> Truffle v5.0.5 (core: 5.0.5) Node v8.11.1

Environment

• Operating System: Version 10.14.2
• Ethereum client: Version: 1.8.5-unstable
• Truffle version (truffle version): Truffle v5.0.5 (core: 5.0.5)
• node version (node --version): Node v8.11.1
• npm version (npm --version): 5.6.0

[haltman-at]

Closing this again for issue maintenance; if anyone is still having this issue, I would suggest opening a new one. Thanks!

[dblockunity]

I followed the steps listed in this bug report and what I found was that the migration worked when I reproduced the problem. When creating the report I had to create an environment that matched my proprietary codebase, but the new environment gives different results.