phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('0472382100146c54a1537aa3d4f62bf5', -1, 1714031901, 1714031901, '0387b7bb', -11, 0, 0)

Line : 187
File : sessions.php