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 ('a5ad17b64bff83d15d5c5985c054f277', -1, 1730414779, 1730414779, '127564be', -1280, 0, 0)

Line : 195
File : sessions.php