Wp-config.php de 81. satırda bu bölüm var hocam. Şöyle bir çözüm buldum amatam anlayamadım.

It looks like in your wp-config.php file you have something like this:
define( ‘CONCATENATE_SCRIPTS’, false );The problem is the quote marks. You’re using ‘fancy quotes’, which look like this: ‘’ (compared to ''). This can happen if you copy and paste code like this from a blog or forum post that wasn’t properly written.
You need to replace it with this:
define( 'CONCATENATE_SCRIPTS', false );Don’t change the true or false part, just the quotes around CONCATENATE_SCRIPTS.