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 ('95f589b4c7b77824d6370b5d96c3ab3d', -1, 1714517126, 1714517126, '12d90672', -4, 0, 0)

Line : 187
File : sessions.php