.htaccess Error, Forbidden 403

Question

I set .htaccess like :

RewriteRule ^news/(.*)/(.*).html$ news.php?id=$1&content=$2 [QSA,L]

and result work like :

http://example.com/399/tutorial-centos.html

But, if i try :

http://example.com/399/.html

or

http://example.com/399/.tutorial-centos.html

i got error :

403 Forbidden
Access to this resource on the server is denied! Powered By LiteSpeed Web Server
LiteSpeed Technologies is not responsible for administration and contents of this web site!

i've tried put it on .htaccces :

ErrorDocument 403 /index.php

But still got error :( How to fix it ?

Thanks for helping me.