phpBB : Критическая ошибка

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('4c7518ec1f0cb31fcacd1df7ea96afee', -1, 1124940961, 1124940961, 'd1edeead', -7, 0)

Line : 158
File : /users/u/n/unlease.ru/html/discussion/new_forum/includes/sessions.php