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 ('105e4eaa1a4c596c2ee129e76be2ba1b', -1, 1713474101, 1713474101, '1276c1e8', 3, 0, 0)

Line : 187
File : sessions.php