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 ('afc68be2164b2a04c4c3dd6db46b08f2', -1, 1752632204, 1752632204, 'd849d890', 3, 0, 0)

Line : 189
File : sessions.php