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 ('36e97369cd165f0d93bb0b53a64bf6f6', -1, 1740079817, 1740079817, '12df6ac3', 3, 0, 0)

Line : 189
File : sessions.php