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 ('64bd2d0354e97502b3bca3aa0578351b', -1, 1730439489, 1730439489, '340f8271', -1, 0, 0)

Line : 195
File : sessions.php