Wie füge ich extra Buttons ein?

[Pseiko]

Ich wollte eine neue Seite einfügen, da kam diese Fehlermeldung:

Allgemeiner Fehler

Could not get contacts list:buddy

DEBUG MODE

SQL Error : 1064 You have an error in your SQL syntax near 'AND c.disallow = 0 AND c.user_ignore = 0 ORDER BY u.username ASC' at line 1

SELECT c.user_id, c.contact_id, c.alert, c.alert_status, c.display_name, u.username FROM phpbb_contact_list c, phpbb_users u WHERE u.user_id = c.contact_id AND c.user_id = AND c.disallow = 0 AND c.user_ignore = 0 ORDER BY u.username ASC

Line : 120
File : /home/www/n4b225/html/forum/mods/contact/class_contact.php