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 ('a685a7f1733497d98678f5444906e496', -1, 1747492601, 1747492601, '340f412b', 39, 0, 0)

Line : 190
File : sessions.php