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 ('3fde6feac7c3d0d3d88c4f0c795ccf88', -1, 1713565257, 1713565257, '0387cae0', -9, 0, 0)

Line : 187
File : sessions.php