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 ('44d8b237e5a1b4a15f10813b5bb91903', -1, 1714024148, 1714024148, '0385a09c', 5, 0, 0)

Line : 187
File : sessions.php