致命错误：找不到类'Zend \ Loader \ AutoloaderFactory'

I am new to Zend framework, when I try to run my skeleton application I am getting following error

Fatal error: Class 'Zend\Loader\AutoloaderFactory' not found in C:\xampp\htdocs\examplezend\init_autoloader.php on line 42

I have googled for the solution but I can't find it.

What may cause this error? Any help will be appreciated.

Pls see below

<?php

// Composer autoloading
if (file_exists('vendor/autoload.php')) {
    $loader = include 'vendor/autoload.php';
}

$zf2Path = false;

if (is_dir('vendor/ZF2/library')) {
    $zf2Path = 'vendor/ZF2/library';
} elseif (getenv('ZF2_PATH')) {      // Support for ZF2_PATH environment variable or     git submodule
    $zf2Path = getenv('ZF2_PATH');
} elseif (get_cfg_var('zf2_path')) { // Support for zf2_path directive value
    $zf2Path = get_cfg_var('zf2_path');
}

if ($zf2Path) {
    if (isset($loader)) {
        $loader->add('Zend', $zf2Path);


    } else {

        include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';
        Zend\Loader\AutoloaderFactory::factory(array(
            'Zend\Loader\StandardAutoloader' => array(
                'autoregister_zf' => true
            )
        ));
    }
}

if (!class_exists('Zend\Loader\AutoloaderFactory')) {
    throw new RuntimeException('Unable to load ZF2. Run `php composer.phar install` or     define a ZF2_PATH environment variable.');
}

Check this line(this line may be in index.php or init_autoloader.php), whether you have mentiond your library path properly or not ( $zf2Path ):

 include $zf2Path . '/Zend/Loader/AutoloaderFactory.php';

EDIT:

Check these lines in init_autoloader.php:

if (file_exists('vendor/autoload.php')) {
    $loader = include 'vendor/autoload.php';
}

$zf2Path = false;

if (is_dir('vendor/ZF2/library')) {
    $zf2Path = 'vendor/ZF2/library';
} elseif (getenv('ZF2_PATH')) {      // Support for ZF2_PATH environment variable or git submodule
    $zf2Path = getenv('ZF2_PATH');
} elseif (get_cfg_var('zf2_path')) { // Support for zf2_path directive value
    $zf2Path = get_cfg_var('zf2_path');
}