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 ('ff5b5befc541cff236291751ebc7be2f', -1, 1715319835, 1715319835, '0315a257', -7, 0, 0)

Line : 189
File : sessions.php