Błąd bazy danych WordPressa: [Illegal argument to a regular expression.]
SELECT DISTINCT SQL_CALC_FOUND_ROWS wp_users.ID,wp_users.display_name,wp_users.user_login FROM wp_users INNER JOIN wp_usermeta ON ( wp_users.ID = wp_usermeta.user_id ) WHERE 1=1 AND ( ( wp_usermeta.meta_key = 'first_name' AND wp_usermeta.meta_value RLIKE '^Marcin($|\\s)' ) ) OR (wp_users.ID LIKE '' OR wp_users.ID RLIKE '') OR (wp_users.user_email LIKE '' OR wp_users.user_email RLIKE '') OR (wp_users.user_url LIKE '' OR wp_users.user_url RLIKE '') OR (wp_users.display_name LIKE '' OR wp_users.display_name RLIKE '') OR (wp_users.user_login LIKE '' OR wp_users.user_login RLIKE '') OR (wp_users.user_nicename LIKE '' OR wp_users.user_nicename RLIKE '') OR (wp_usermeta.meta_key = 'nickname' AND (wp_usermeta.meta_value LIKE '' OR wp_usermeta.meta_value RLIKE '')) OR (wp_usermeta.meta_key = 'first_name' AND (wp_usermeta.meta_value LIKE '' OR wp_usermeta.meta_value RLIKE '')) OR (wp_usermeta.meta_key = 'last_name' AND (wp_usermeta.meta_value LIKE '' OR wp_usermeta.meta_value RLIKE '')) ORDER BY user_registered ASC LIMIT 0, 1