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 ('c1d140f7c55ffbe8e086c155cde19a05', -1, 1751407663, 1751407663, 'd849d860', 42, 0, 0)

Line : 190
File : sessions.php