Php 模块视图文件在Codeigniter 4中显示无效

我已将模块文件夹添加到..\app\Config\Autoload.php

public $psr4 = [
          APP_NAMESPACE => APPPATH, // For custom app namespace
          'Config'      => APPPATH . 'Config',
          'Blog'      => ROOTPATH . 'example/blog',
];

namespace Config;

// Create a new instance of our RouteCollection class.
$routes = Services::routes();

$routes->get('blog', 'blog::index', ['namespace' => 'Blog\Controllers']); 

namespace Blog\Controllers;

class Blog extends \CodeIgniter\Controller {

    function index() { 
        echo view('Example\Blog\Views\show_blog');
    }

} 

我的目录：

/Home directory of main project folder
/example
    /Blog
        /Config
            /Routes.php
        /Controllers            
            /Blog.php
        /Views
           /show_blog.php

Routes.php

public $psr4 = [
          APP_NAMESPACE => APPPATH, // For custom app namespace
          'Config'      => APPPATH . 'Config',
          'Blog'      => ROOTPATH . 'example/blog',
];

namespace Config;

// Create a new instance of our RouteCollection class.
$routes = Services::routes();

$routes->get('blog', 'blog::index', ['namespace' => 'Blog\Controllers']); 

namespace Blog\Controllers;

class Blog extends \CodeIgniter\Controller {

    function index() { 
        echo view('Example\Blog\Views\show_blog');
    }

} 

Blog.php

public $psr4 = [
          APP_NAMESPACE => APPPATH, // For custom app namespace
          'Config'      => APPPATH . 'Config',
          'Blog'      => ROOTPATH . 'example/blog',
];

namespace Config;

// Create a new instance of our RouteCollection class.
$routes = Services::routes();

$routes->get('blog', 'blog::index', ['namespace' => 'Blog\Controllers']); 

namespace Blog\Controllers;

class Blog extends \CodeIgniter\Controller {

    function index() { 
        echo view('Example\Blog\Views\show_blog');
    }

} 

在运行my_domain/index.php/blog后，会显示以下错误：

CodeIgniter\View\Exceptions\ViewException

Invalid file: Example\Blog\Views\show_blog.php

没有从该解决方案中获得任何解决方案：

我错在哪里？正在寻求帮助。

---

提前感谢。

将Blog.php改成这个，对我很有用

namespace Blog\Controllers;

class Blog extends \CodeIgniter\Controller {

    function index() { 
        echo view('Blog\Views\show_blog');
    }

} 

信用：CI论坛