Help migration 3x to 4x

Hello, I am updating the version of Codeigniter, I am facing some problems. I have a folder called Template and inside it I have some code, when calling these templates, they generate an error and so far I have not been able to solve, below is my code.

PHP Code:

<?php

namespace Config;

use CodeIgniter\Config\AutoloadConfig;

class Autoload extends AutoloadConfig
{    
    public $psr4 = [
        APP_NAMESPACE => APPPATH, // For custom app namespace
        'Config'      => APPPATH . 'Config',
        'Libraries' => APPPATH .'/Libraries/My_parser.php',
        'Preferencia' => APPPATH .'/Libraries/Preferencia.php',
        'Traducao' => APPPATH .'/Libraries/Traducao.php',
        'Service' => APPPATH .'/Config/Services',
        'Menus' => APPPATH .'/Libraries/Menus.php' 
    ];

    public $classmap = [];
} 


My ControllerBase:

PHP Code:

<?php
namespace App\Controllers;

use CodeIgniter\Controller;
use App\Libraries\My_parser;
use App\Libraries\Preferencia;
use App\Models\index_model;
use App\Libraries\Traducao;
use App\Libraries\Menus;

class BaseController extends Controller
{

    protected $helpers = [];
    public function initController(\CodeIgniter\HTTP\RequestInterface $request, \CodeIgniter\HTTP\ResponseInterface $response, \Psr\Log\LoggerInterface $logger)
    {
        // Do Not Edit This Line
        parent::initController($request, $response, $logger);
        $this->_db = \Config\Database::connect();
        $this->My_parser = new My_Parser();
        $this->preferencia = new Preferencia();
        $this->_model = new \App\Models\index_model();
        $this->traducao = new Traducao();
        $this->menus = new \App\Libraries\Menus();
        //$this->$session = \Config\Services::session($config);
    }

    
      public function output($data, $status){
        $this->output
        ->set_status_header(200)
        ->set_content_type('application/json', 'utf-8')
        ->set_output(
          json_encode(
            array(
              'status'=> $status,
              'response'=> $data    
            ), 
            JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES
          )
        )->_display();
        exit;
      }
    
    }

  class Usuario extends BaseController{
      
    public $usuario = array();
  
    public function __construct(){
  
      parent::__construct();
  
      // verifica se existe sessão
      if(!$this->session->has_userdata('id')){
        $this->session->sess_destroy();
        redirect("app-admin/logout");    
      }
  
    }
  
    public function getUsuario(){
      return $this->usuario;
    }
} 


please help-me, and sorry my bad english

Good day Guys