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 ('1947e12a397f3c2477db31d87e7c476e', -1, 1737484587, 1737484587, '340e3c38', 9, 0, 0)

Line : 187
File : sessions.php