当我访问该网站时,它给我一个404错误.@H_404_2@

我的.htaccesss文件：@H_404_2@

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    #Removes access to the system folder by users.
    #Additionally this will allow you to create a System.PHP controller,#prevIoUsly this would not have been possible.
    #'system' can be replaced if you have renamed your system folder.
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$index.PHP?/$1 [L]

    #When your application folder isn't in the system folder
    #This snippet prevents user access to the application folder
    #Submitted by: Fabdrol
    #Rename 'application' to your applications folder name.
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$index.PHP?/$1 [L]

    #Checks to see if the user is attempting to access a valid file,#such as an image or css document,if this isn't true it sends the
    #request to index.PHP
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$index.PHP?$1 [L]
</IfModule>
<IfModule !mod_rewrite.c>
     ErrorDocument 404 index.PHP
</IfModule>

我真的不知道该怎么办.任何帮助都是有用的.谢谢.@H_404_2@

编辑：当我编辑index.PHP文件时,只需输入echo’Hey’;并删除.htaccess文件,它工作正常.@H_404_2@