I'm following an Ethereum Dapp tutorial in Udemy. I seem to stumble upon an error somewhere early in the course. I was about to deploy my beginner's contract and test it with Mocha when the problem appeared.


pragma solidity >=0.4.0 <0.6.0;

contract Inbox{
    string message;

    function set(string memory initialMessage) public {
        message = initialMessage;
    function setMessage(string memory newMessage) public{
        message = newMessage;


const path = require('path');
const fs = require('fs');
const solc = require('solc');

const inboxPath = path.resolve(__dirname, 'contracts', 'Inbox.sol');
const source = fs.readFileSync(inboxPath, 'utf8'); 

module.exports = solc.compile(source, 1).contracts[':Inbox'];


const assert = require('assert');
const ganache = require('ganache-cli');
const Web3 = require('web3');
const web3 = new Web3(ganache.provider());
const {interface, bytecode} = require('../compile');

let accounts;
let inbox;

beforeEach(async ()=>{

    accounts = await web3.eth.getAccounts();

   inbox = await new web3.eth.Contract(JSON.parse(interface))
        data: bytecode,
        arguments:["Hi there!"]
    .send({from:accounts[0] , gas: 1000000});

describe("Inbox", ()=>{
    it("deploys a contract", () => {

The error on my terminal says:

 1) "before each" hook for "deploys a contract":
     Error: types/values length mismatch (count={"types":0,"values":1}, value={"types":[],"values":["Hi there!"]}, version=4.0.32)
      at Object.throwError (node_modules\ethers\errors.js:76:17)
      at AbiCoder.encode (node_modules\ethers\utils\abi-coder.js:922:20)
      at AbiCoder.encodeParameters (node_modules\web3-eth-abi\dist\web3-eth-abi.cjs.js:45:34)
      at MethodEncoder.encode (node_modules\web3-eth-contract\dist\web3-eth-contract.cjs.js:143:45)
      at MethodsProxy.createMethod (node_modules\web3-eth-contract\dist\web3-eth-contract.cjs.js:556:57)
      at MethodsProxy.executeMethod (node_modules\web3-eth-contract\dist\web3-eth-contract.cjs.js:534:23)
      at Function.ContractMethod.send (node_modules\web3-eth-contract\dist\web3-eth-contract.cjs.js:505:29)
      at Context.beforeEach (test\Inbox.test.js:19:6)
      at process._tickCallback (internal/process/next_tick.js:68:7)

I suspect it's about the versioning of web3 or solc. I am using the latest versions of both packages. The tutorial I'm following uses older versions that are already depreciated.

My package.json:

      "name": "inbox",
      "version": "1.0.0",
      "description": "",
      "main": "index.js",
      "scripts": {
        "test": "mocha"
      "author": "Ryan Arcel Galendez",
      "license": "ISC",
      "dependencies": {
        "ganache-cli": "^6.4.4",
        "mocha": "^6.1.4",
        "solc": "^0.4.26",
        "web3": "^1.0.0-beta.55"

I appreciate any help. Thanks.

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