phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('de2ab8eaa44a9bdbec8ca76af797540a', -1, 1715104001, 1715104001, '12756f01', 3, 0, 0)

Line : 189
File : sessions.php