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 ('b4fa5c2a56f6a91d1fa87e3303710a52', -1, 1714004853, 1714004853, '030c296a', -1, 0, 0)

Line : 187
File : sessions.php