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 ('da83bbc3e5200eb40779452888ce5e1f', -1, 1713874161, 1713874161, '0387b7bb', -4, 0, 0)

Line : 172
File : sessions.php