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 ('ef5a1862747249979ae10f96afbaae4e', -1, 1737438906, 1737438906, '340e42f2', 8, 0, 0)

Line : 187
File : sessions.php