phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('742db5cc683ee50af722ca2606c478f1', -1, 1715114558, 1715114558, '12d8e34c', -9, 0, 0)

Line : 189
File : sessions.php