phpBB : Erro Crítico

Error creating new session

DEBUG MODE

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

INSERT INTO f_activesessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f8e4e1185d1c440d812b571c6db6cba9', -1, 1762197505, 1762197505, 'd849d895', 3, 0, 0)

Line : 187
File : sessions.php