phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 3

INSERT INTO bb1sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ab185a0f1d93878375607adfe2597b37', -1, 1409596284, 1409596284, '36a60f7f', 0, 0, 0)

Line : 182
File : sessions.php