Forums / Cotonti / Support / Sef url Handy mod not working on the admin.php

i tried Handy mod sef url links and on index and pages good working but  admin.php error ? site.com/admin  <- Error , what is problem or what i must do for htaccess , my kernel is openlitespeed

my .htaccess openltiespeed and like this.

https://www.cotonti.com/forums?m=posts&q=9301&n=last#bottom