$message is undefined on laravel 8

I'm learning Laravel, and I've been trying to pass data between a controller and a view, but I'm still getting the same error on the page. Does anyone know how to fix this? Even with this small code, it doesn't seem to work. Do I need to make a configuration or something?

I've tried

->with('message', 'Hi Victoria')

view

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>App title</title>
    <html>
        <body>
            <h1>Hello, {{ $message }}</h1>
        </body>
    </html>
</html>

controller

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Hello;

class HelloWorld extends Controller
{
    public function sayHello()
    {
  
        return view('hello', ['message' => 'Hi Victoria']);
    
    }
}

web.php

Route::get('/', function(){

    return view('hello');
});

Solution

The problem is that you have written a controller, but you are not using it. In your route ( web.php ), you have returned the view.

You should take a look at Laravel's documentation regarding how to make a route point to a controller method

So, you would need to change your route in web.php to

use App\Http\Controllers\HelloWorld;

Route::get('/', [HelloWorld::class, 'sayHello']);