Internal Server Error 500

also i try to change the line in function
@header(“HTTP/1.1 $header $text”);
to
// @header(“HTTP/1.1 $header $text”);

same problem

Do you have an url?

https://arabic.milyani.com
if log in to
https://milyani.com/arabic
you get 404 errore cod
i have WP in main https://milyani.com

I do not understand.

Blog is in milyani.com

But what is in arabic.milyani.com and milyani.com/arabic?

It looks like the subdomain arabic.milyani.com is wrong implemented and the page milyani.com/arabic is redirected to your blog?

no
i have 2 blogs in my site
one in english milyani.com
one in arabic milyani.com/arabic or arabic.milyani.com

I think both urls
milyani.com/arabic
and
milyani.com/
point to the same blog, not two different ones.

Perhaps milyani.com/arabic is rewritten by htaccess to the first blog?

i solve the problem by makeing new dir
then put the info in WP-config

remove the old folder

rename the new folder to the old one

no they are not see the link now
milyani.com/arabic

Yeah, now they are different.

Perhaps you had a rewrite-htaccess in the old (deleted) folder?

yes i have , i think the problem from it to but i didnt know how to solve it .