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 ('54be11d4003ac50d3027b8b08a5c9805', -1, 1714019781, 1714019781, '030c296a', 2, 0, 0)

Line : 187
File : sessions.php