phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('cc4dde7f6c559a9377663ec68557f07e', -1, 1714517148, 1714517148, '12dea2d8', -8, 0, 0)

Line : 187
File : sessions.php