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) VALUES ('7524477ce5bdbc63ce735c4dd2f9569e', -1, 1714675988, 1714675988, '340e554c', 20, 0)

Line : 158
File : sessions.php