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 ('ebd57a535d0949194f3d0c90f4f61375', -1, 1713936923, 1713936923, '0d3a524f', -11, 0, 0)

Line : 187
File : sessions.php