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 ('4e87095ff80f64850381b3b34ae04864', -1, 1740000882, 1740000882, '126109aa', 8, 0, 0)

Line : 187
File : sessions.php