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 ('365f61d34f348546284e9823d51fdfa8', -1, 1713532659, 1713532659, '030febc4', -4, 0, 0)

Line : 187
File : sessions.php