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 ('0a5234cdd855f70a2a6361b789632b53', -1, 1412077649, 1412077649, '1716d97a', 10, 0, 0)

Line : 182
File : sessions.php