Wordpress Hata hk. Warning: preg_match(): Compilation failed: range out of order

Warning: preg_match(): Compilation failed: range out of order in character class at offset 42 in /home/obiajans/public_html/wp-includes/class-wp.php on line 231
Warning: preg_match(): Compilation failed: range out of order in character class at offset 42 in /home/obiajans/public_html/wp-includes/class-wp.php on line 232

Bu hatayı alıyorum sorun sizce neyden kaynaklıdır bilen var mı ?

PHP sürümünüzü kontrol edin.
https://wordpress.org/support/topic/...lation-failed/
wordpress.org da konu açılmış burayada bakabilirsiniz.