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 ('43b8e5cd919e0838af5f1f3b97a4e2c1', -1, 1748964836, 1748964836, '0394bb7e', 2, 0, 0)

Line : 190
File : sessions.php