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 ('cf0e0c639c7766bc8e5da379b152123d', -1, 1741888201, 1741888201, '12db1cb3', -4, 0, 0)

Line : 187
File : sessions.php