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, session_admin) VALUES ('81abb8eae81f8ecfc7688ce26c1b730d', -1, 1713613729, 1713613729, '0391bfa9', -10, 0, 0)

Line : 187
File : sessions.php