Getting a raw login page when switch language (solved)

today i faced strange problem, when i change language in my ojs, lose LTR.CSS !
I haven’t been able to reinstall OJS again due to all restriction
in persian language all things are okey ! but when i change language to english , not loading my css
in that case in admin panel works very well both of them language

i solve that , my problem due to locale file and the defination of stylesheet for english language