Customy WP Query Args are convertet in SQL result

As the dev note for 4.8.3 implies, you need to unescape the escaped % by using the $wpdb->remove_placeholder_escape method. Something like

global $wpdb;
add_filter('posts_request',array($wpdb, 'remove_placeholder_escape'));

Very untested.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)