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 ('271b0abc53e0cc8a5e92e92398bd0174', -1, 1713506349, 1713506349, '12ddaef8', 5, 0, 0)

Line : 187
File : sessions.php