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 ('a7ed64da1d805e4c5b0d59e85086e0fe', -1, 1715072335, 1715072335, '12daacf9', 7, 0, 0)

Line : 189
File : sessions.php