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 ('ac1b80b8047ff01b4be25139be44a384', -1, 1748031025, 1748031025, '0387ec86', 2, 0, 0)

Line : 190
File : sessions.php