问500内部服务器错误CodeIgniter htaccess mod_rewrite

EN

<IfModule mod_rewrite.c>
  RewriteEngine On
  RewriteBase /SearchDatGifUbuntu/
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule ^(.*)$ index.php?/$1 [L]
</IfModule>

<IfModule !mod_rewrite.c>
  # If we don't have mod_rewrite installed, all 404's
  # can be sent to index.php, and everything works as normal.
  ErrorDocument 404 /index.php
</IfModule>

<Directory /var/www/>
    Options Indexes FollowSymLinks MultiViews
    AllowOverride All
    Order allow,deny
    allow from all
</Directory>

$CI = new $class();