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 ('1561b9ac5524ee209d0fe0e32bba25bf', -1, 1713882883, 1713882883, '03858d06', -9, 0, 0)

Line : 187
File : sessions.php