cannot connect client app with web3js to metamask - ethereum

Question

I am a dapp beginner. This is a demo app for a todolist
I am unable to get a connection to the blockchain in web3js. Websocket connection error
localhost is localhost:8545
using web3js CDN : https://cdn.jsdelivr.net/npm/web3#latest/dist/web3.min.js
this is my app.js
App = {
loading: false,
contracts: {},
load: async () => {
console.log('app loading ...')
console.log(web3);
await App.loadWeb3()
await App.loadAccount()
// await App.loadContract()
// await App.render()
},
// https://medium.com/metamask/https-medium-com-metamask-breaking-change-injecting-web3-7722797916a8
loadWeb3: async () => {
let web3 = new Web3('ws://localhost:8545');
if (typeof web3 !== 'undefined') {
App.web3Provider = web3.currentProvider
web3.setProvider('ws://localhost:8546');
web3.eth.getAccounts().then(console.log);
} else {
window.alert("Please connect to Metamask.")
}
// Modern dapp browsers...
if (window.ethereum) {
window.web3 = new Web3(ethereum)
try {
// Request account access if needed
await ethereum.enable()
// Acccounts now exposed
web3.eth.sendTransaction({/* ... */})
console.log('MetaMask is installed!');
} catch (error) {
// User denied account access...
}
}
// Legacy dapp browsers...
else if (window.web3) {
App.web3Provider = web3.currentProvider
window.web3 = new Web3(web3.currentProvider)
// Acccounts always exposed
web3.eth.sendTransaction({/* ... */})
}
// Non-dapp browsers...
else {
console.log('Non-Ethereum browser detected. You should consider trying MetaMask!')
}
},
loadAccount: async () => {
// Set the current blockchain account
App.account = web3.eth.accounts[0]
console.log(App.account)
// web3 set up by loadWeb3, includes all accounts, loading first one via MetaMask
},
loadContract: async () => {
// Create a JavaScript version of the smart contract
const todoList = await $.getJSON('TodoList.json')
App.contracts.TodoList = TruffleContract(todoList)
App.contracts.TodoList.setProvider(App.web3Provider)
// Hydrate the smart contract with values from the blockchain
App.todoList = await App.contracts.TodoList.deployed()
},
render: async () => {
// Prevent double render
if (App.loading) {
return
}
// Update app loading state
App.setLoading(true)
// Render Account
$('#account').html(App.account)
// Render Tasks
await App.renderTasks()
// Update loading state
App.setLoading(false)
},
renderTasks: async () => {
// Load the total task count from the blockchain
const taskCount = await App.todoList.taskCount()
const $taskTemplate = $('.taskTemplate')
// Render out each task with a new task template
for (var i = 1; i <= taskCount; i++) {
// Fetch the task data from the blockchain
const task = await App.todoList.tasks(i)
const taskId = task[0].toNumber()
const taskContent = task[1]
const taskCompleted = task[2]
// Create the html for the task
const $newTaskTemplate = $taskTemplate.clone()
$newTaskTemplate.find('.content').html(taskContent)
$newTaskTemplate.find('input')
.prop('name', taskId)
.prop('checked', taskCompleted)
.on('click', App.toggleCompleted)
// Put the task in the correct list
if (taskCompleted) {
$('#completedTaskList').append($newTaskTemplate)
} else {
$('#taskList').append($newTaskTemplate)
}
// Show the task
$newTaskTemplate.show()
}
},
createTask: async () => {
App.setLoading(true)
const content = $('#newTask').val()
await App.todoList.createTask(content)
window.location.reload()
},
toggleCompleted: async (e) => {
App.setLoading(true)
const taskId = e.target.name
await App.todoList.toggleCompleted(taskId)
window.location.reload()
},
setLoading: (boolean) => {
App.loading = boolean
const loader = $('#loader')
const content = $('#content')
if (boolean) {
loader.show()
content.hide()
} else {
loader.hide()
content.show()
}
}
}
$(() => {
$(window).load(() => {
App.load()
})
})
I get this error in the console :
Again I am a total newbie, any help is appreciated.
Any source of info did not help

Answer 1

Hey after metamask update , it no longer injects web3 .
You can check the blog below , It has shown how to connect metamask with our project .
https://dapp-world.com/blogs/01/how-to-connect-metamask-with-dapp--1616927367052
Only thing is its web application , you can relate it with your project .
Hope it works !