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 ('2559f752d21f12deeee9a8795a1592e3', -1, 1713442742, 1713442742, '0389bbe9', 0, 0, 0)

Line : 187
File : sessions.php