Create file Kernel.php

@carlosoliveiras That file is no longer available in the latest versions of Laravel. You're likely looking for the bootstrap/app.php file.

If you clarify what you need to accomplish, we can help more.

Usually the question pertains to:

https://laravel.com/docs/11.x/middleware#manually-managing-laravels-default-middleware-groups

I changed my bootstrap/app.php file to:

<?php

use Illuminate\Foundation\Application;
use Illuminate\Foundation\Configuration\Exceptions;
use Illuminate\Foundation\Configuration\Middleware;

return Application::configure(basePath: dirname(__DIR__))
                ->withRouting(
                        using: function () {
                            Route::middleware('web')
                            ->namespace('App\Http\Controllers')
                            ->group(base_path('routes/web.php'));
                        },
                        web: __DIR__ . '/../routes/web.php',
                        commands: __DIR__ . '/../routes/console.php',
                        health: '/up',
                )
                ->withMiddleware(function (Middleware $middleware) {
                    $middleware->group('web', [
                        \Illuminate\Cookie\Middleware\EncryptCookies::class,
                        \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
                        \Illuminate\Session\Middleware\StartSession::class,
                        \Illuminate\View\Middleware\ShareErrorsFromSession::class,
                        \Illuminate\Foundation\Http\Middleware\ValidateCsrfToken::class,
                        \Illuminate\Routing\Middleware\SubstituteBindings::class,
                        \Illuminate\Session\Middleware\AuthenticateSession::class,
                    ]);
                })
                ->withExceptions(function (Exceptions $exceptions) {
                    //
                })->create();

All works, tweak yours as needed.