php - REQUEST_FILENAME consider requset as real file in live server but in local consider it as not file -

i have htaccess

<ifmodule mod_rewrite.c>         rewriteengine on    rewriterule ^(mdiet|user)($|/) - [l]    rewritecond %{request_filename} !-f    rewritecond %{request_uri} !(\.css|\.js|\.png|\.jpg|\.gif|robots\.txt)$ [nc]    rewriterule ^(.*)$ route.php?q=$1 [nc,qsa,l]  </ifmodule> 

when call url in localhost: http://localhost:8080/comm_cvs/comm/web/group_items htaccess undestand group_items not file , redirect request route.php , went ok.

but when move code server: behaivior not expected

when call: www.mysite.com/group_items => htaccess consider file , go group_items.php directly without redirect route.php.

what's problem in live server??