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 ('6a4e82b249b4c9d218bda4173c738713', -1, 1715146331, 1715146331, '12778b32', -9, 0, 0)

Line : 189
File : sessions.php