Unable to remove index.php on Google Cloud server.

Hello,

I have unable to remove index.php in my URl. I used google cloud server and codeigniter files are hosted in wordpress website directory.
My URL : http://ddrws.in/util/visitor/index.php/user/login , when i remove index.php and run this error shown..
Oops! That Page Can’t Be Found.

It looks like nothing was found at this location. Maybe try one of the links below or a search?


I also used all code of .htaccess and config.php file.

Please help me , Thanks in advance..