Php CKEditor中的KCFinder在托管服务器上显示HTTP 500错误

在我的一个Codeigniter v3.1.3项目中，我使用了CKEditor中的“KCFinder”将图像上传到服务器。项目的my localhost版本的目录结构为：

localhost/project_ci
--application
--assets
----admin
------ckeditor
------kcfinder
--system
--index.php

起初，我很难将KCFinder与CKEditor集成，但在搜索互联网后，我遇到了一个教程（我现在不记得url了）解释集成它的步骤。我遵循了上面提到的步骤，现在它在localhost上运行得非常好。上述教程的步骤1是将根目录中index.php的一些值更改为：

$system_path = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'system';

$application_folder = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'application';

现在我已将上述项目上传到共享托管服务器中。在托管服务器中，文件组织如下：

/home/myaccount
--ci_top_secret
----application
----system
--public_html
----assets
----index.php

index.php中的系统路径值为：

$system_path = '../ci_top_secret/system';

$application_folder = '../ci_top_secret/application';

---

我的网站运行良好，所有的CKEditor都可见。但是在“图像属性”弹出窗口中，当我单击“浏览服务器”按钮时，出现一个显示HTTP 500错误的空白页。因此，我无法将图像上载到远程服务器。我真的不明白是什么问题。是因为index.php中的system_path值。请提供一些代码。谢谢在KC Finder中，您将找到conf文件夹 保存这些文件 config.php

<?php

/** This file is part of KCFinder project
  *
  *      @desc Base configuration file
  *   @package KCFinder
  *   @version 3.12
  *    @author Pavel Tzonkov <sunhater@sunhater.com>
  * @copyright 2010-2014 KCFinder Project
  *   @license http://opensource.org/licenses/GPL-3.0 GPLv3
  *   @license http://opensource.org/licenses/LGPL-3.0 LGPLv3
  *      @link http://kcfinder.sunhater.com
  */

/* IMPORTANT!!! Do not comment or remove uncommented settings in this file
   even if you are using session configuration.
   See http://kcfinder.sunhater.com/install for setting descriptions */
if ($_SERVER['SERVER_NAME'] == 'localhost' || strstr($_SERVER['SERVER_NAME'], '172.16')) {
    $upload_url = "upload";
    $upload_dir = "";
} else if ($_SERVER['HTTP_HOST'] == "216.55.169.45") {
    $upload_url = "http://216.55.169.45/~mpdriver/master/assets/admin/kcfinder/upload";
    $upload_dir = "/home/mpdriver/public_html/master/assets/admin/kcfinder/upload";
} else {
    $upload_url = "upload";
    $upload_dir = "";
}
$_CONFIG = array(


// GENERAL SETTINGS

    'disabled' => FALSE,
    'uploadURL' => "upload",
    'uploadDir' => "",
    'theme' => "default",

    'types' => array(

    // (F)CKEditor types
        'files'   =>  "",
        'flash'   =>  "swf",
        'images'  =>  "*img",

    // TinyMCE types
        'file'    =>  "",
        'media'   =>  "swf flv avi mpg mpeg qt mov wmv asf rm",
        'image'   =>  "*img",
    ),


// IMAGE SETTINGS

    'imageDriversPriority' => "imagick gmagick gd",
    'jpegQuality' => 90,
    'thumbsDir' => ".thumbs",

    'maxImageWidth' => 0,
    'maxImageHeight' => 0,

    'thumbWidth' => 100,
    'thumbHeight' => 100,

    'watermark' => "",


// DISABLE / ENABLE SETTINGS

    'denyZipDownload' => false,
    'denyUpdateCheck' => false,
    'denyExtensionRename' => false,


// PERMISSION SETTINGS

    'dirPerms' => 0755,
    'filePerms' => 0644,

    'access' => array(

        'files' => array(
            'upload' => true,
            'delete' => true,
            'copy'   => true,
            'move'   => true,
            'rename' => true
        ),

        'dirs' => array(
            'create' => true,
            'delete' => true,
            'rename' => true
        )
    ),

    'deniedExts' => "exe com msi bat cgi pl php phps phtml php3 php4 php5 php6 py pyc pyo pcgi pcgi3 pcgi4 pcgi5 pchi6",


// MISC SETTINGS

    'filenameChangeChars' => array(/*
        ' ' => "_",
        ':' => "."
    */),

    'dirnameChangeChars' => array(/*
        ' ' => "_",
        ':' => "."
    */),

    'mime_magic' => "",

    'cookieDomain' => "",
    'cookiePath' => "",
    'cookiePrefix' => 'KCFINDER_',


// THE FOLLOWING SETTINGS CANNOT BE OVERRIDED WITH SESSION SETTINGS

    '_normalizeFilenames' => false,
    '_check4htaccess' => true,
    //'_tinyMCEPath' => "/tiny_mce",

    '_sessionVar' => "KCFINDER",
    //'_sessionLifetime' => 30,
    //'_sessionDir' => "/full/directory/path",
    //'_sessionDomain' => ".mysite.com",
    //'_sessionPath' => "/my/path",

    //'_cssMinCmd' => "java -jar /path/to/yuicompressor.jar --type css {file}",
    //'_jsMinCmd' => "java -jar /path/to/yuicompressor.jar --type js {file}",

);

?>

---

同时也要检查您的URL指向。

有人来看看我的问题吗