phpBB : Critical Error

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, session_admin) VALUES ('c27c12dafa0691e6f309228faf9fadd3', -1, 1369099944, 1369099944, 'b8494a2f', 3, 0, 0)

Line : 187
File : sessions.php