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 ('e5d7db8e63dc0eb4e26a53342e061df2', -1, 1713939240, 1713939240, '0390e996', -2, 0, 0)

Line : 187
File : sessions.php