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 ('7e561065c59d40e4236794638596c891', -1, 1762142874, 1762142874, 'd849d83e', 8, 0, 0)

Line : 187
File : sessions.php