phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8bf415a63a46638a4da69e9c3d0c2ab3', -1, 1717138502, 1717138502, '1276d88d', -4, 0, 0)

Line : 187
File : sessions.php