Here is the answer:

https://laracasts.com/discuss/channels/laravel/laravel8-ui-bootstrap-uiauth-error-target-class-homecontroller-does-not-exist

You need to add an import in your web.php file:

use App\Http\Controllers\HomeController;

or take a look into the other answer above :)

Is this a bug?

No they are just crazy...

So if i want to upgrade to Laravel 8 from 7 i have to change all my routes???????????? O.o

No you don't have to. Just add what I posted before.

@felloz In laravel8 defining the routing is little bit changed: check documentation https://laravel.com/docs/8.x/routing#basic-routing

#In the previous version of laravel

<?php
Route::resource('home', 'HomeController'); // It is okkk

# In laravel 8 you have to define route like this

<?php

use App\Http\Controllers\HomeController; 


Route::resource('home', HomeController::class);

and you can also use this technique as @michaloravec discussed yet

To App/Providers/RouteServiceProvider.php add $namespace

It didnt work i had to add it in the web.php like nakov published

@felloz did you follow laravel8 routing documentation? https://laravel.com/docs/8.x/routing#basic-routing

@felloz

just change this into this

<?php

use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Route; 
use App\Http\Controllers\HomeController; # don't forgot to add this

Route::get('/', function () {
    return view('welcome');
});

Auth::routes();

Route::get('/home', [HomeController::class, 'index']);

Thanks for your response, I really appreciated but saddly I have a system where i have more than 4000 routes, this isnt a solution viable for me, im trying to do what Michal recommend and is in domcumention but isn't working :-(

If you prefer Laravel 7.x style controller route prefixing, you may simply add the $namespace property into your application's RouteServiceProvider.

@felloz I think, Starting new project with laravel8 is good but somewhere upgrading old laravel project into 8 is much confusing because in laravel8 most of the part is changed...

Fixed, i had to add the property in the boot method like this:

public function boot()
    {
        $this->configureRateLimiting();

        $this->routes(function () {
            Route::middleware('web')
                ->namespace($this->namespace)
                ->group(base_path('routes/web.php'));

            Route::prefix('api')
                ->middleware('api')
                ->group(base_path('routes/api.php'));
        });
    }

Please edit the full answer to choose as best answer.

Does anyone know why they change the Controller? Why we need to do this now?

Right way to solve this issue in Laravel 8: https://www.scratchcode.io/laravel-8-target-class-controller-does-not-exist/

hi, i found the answer and that was too funny.you just need to change your controller name to every other thing else this.for example:change this: Route::get('/', [HomeController::class,'Home']);

To:

Route::get('/', [LandingController::class,'Home']);

after that you must use its namespace:

use App\Http\Controllers\LandingController;

The correct new way is:

---- web.php ------

In your web.php file use it : use App\Http\Controllers\HomeController; then Route::get('/home',[HomeController::class,'index']);

May be try let route inside by Group , I think Laravel > 8.0 disable namespace is for the modern web API / headless CMS / React...

routes/web.php

Route::group(['namespace'=>'App\Http\Controllers', 'prefix'=>'/' ], function()
{
			Route::get('/', [HomeController::class,'home']);
			Route::resource('/test', 'Test');   
});

CREATE HomeController USING THIS COMMAND ** php artisan make:controller HomeController --resource

--> HomeController.php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class HomeController extends Controller { /** * Display a listing of the resource. */ public function index() { $login_details = [ 'username' => " ", "password" => " " ]; return view('welcome', ['login_detail' => $login_details]); }

/**
 * Show the form for creating a new resource.
 */
public function create()
{
    //
}

/**
 * Store a newly created resource in storage.
 */
public function store(Request $request)
{
    //
}

/**
 * Display the specified resource.
 */
public function show(string $id)
{
    //
}

/**
 * Show the form for editing the specified resource.
 */
public function edit(string $id)
{
    //
}

/**
 * Update the specified resource in storage.
 */
public function update(Request $request, string $id)
{
    //
}

/**
 * Remove the specified resource from storage.
 */
public function destroy(string $id)
{
    //
}

}

--> web.php

use Illuminate\Support\Facades\Route; use App\Http\Controllers\WelcomeController;

Route::get('/', [WelcomeController::class, 'index']);