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 ('4d002ea49545ad1cff3b4e79f9721b5d', -1, 1713561126, 1713561126, '039367ca', -11, 0, 0)

Line : 187
File : sessions.php