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 ('77f5a919c4bb8e7bb9d196bd0c39c009', -1, 1737554829, 1737554829, '1277747d', 5, 0, 0)

Line : 187
File : sessions.php